Tìm x, biết:
a) 390 - ( x - 7 ) = 169 : 13
b) x - 6 : 2 - ( 48 - 24 ) : 2 : 6 - 3 = 0
c) ( x - 140 ) : 7 = 3 3 - 2 3 . 3
d) x + 5 . 2 - ( 32 + 16 . 3 : 6 - 15 ) = 0
Tìm x, biết:
a, 390- ( x - 7) = 169:13
b, x-6:2-(48-24):2:6-3=0
a)390-(x-7)=169:13
<=>390-(x-7)=13
<=>x-7=390-13
<=>x-7=377
<=>x=377+7
<=>x=384
b)x-6:2-(48-24):2:6-3=0
<=>x-3-24:2:6-3=0
<=>x-6-12:6=0
<=>x-6-2=0
<=>x-8=0
<=>x=8
a) 390 - ( x - 7 ) = 169 : 13
390 - ( x - 7 ) = 13
x - 7 = 390 - 13
x - 7 = 377
x = 377 + 7
x = 384
b) x - 6 : 2 - ( 48 - 24 ) : 2 : 6 - 3 = 0
x - 3 - ( 48 - 24 ) : 2 : 6 = 0 + 3 = 3
x - 3 - ( 48 - 24 ) : 2 = 3 x 6 = 18
x - 3 - ( 48 - 24 ) = 18 x 2
x - 3 - 24 = 36
x - 3 = 36 + 24
x - 3 = 60
x = 60 + 3
x = 63
Jang Ha Na làm sai mà cũng đc ****
Tìm x, biết:
a, 390 – (x – 7) = 169:13
b, (x – 140) : 7 = 3 3 - 2 3 . 3
c, x – 6 : 2 – (48 – 24) : 2 :6 – 3 = 0
d, x + 5.2 – (32+16.3:6 – 15) = 0
a, x = 384
b, x = 161
c, x = 8
d, x = 15
Tìm x biết:
a) 390 - ( x - 7 ) = 169 : 13
b) ( x - 140 ) : 7 = 32 - 23 . 3
a) 390 - (x - 7) = 169 : 13
390 - (x - 7) = 13
x - 7 = 390 - 13
x - 7 = 377
x = 377 + 7
x = 384
b) ( x - 140 ) : 7 = 32 - 23 . 3
(x - 140) : 7 = -15
x - 140 = -15 . 7
x - 140 = -105
x = 105 + 140
x = 35
a) 390 - (x - 7) = 169 : 13
390 - (x - 7) = 13
x - 7 = 390 - 13 = 377
x = 377 + 7
x = 384
\(390-\left(x-7\right)=169:13\)
\(\Rightarrow390-\left(x-7\right)=13\)
\(\Rightarrow x-7=390-13\)
\(\Rightarrow x-7=377\)
\(\Rightarrow x=384\)
Tìm x biết :
a) 390 - ( x - 7 ) = 169 : 13
b) ( x - 110 ) : 7 - 33 - 23 . 3
c) x - 6 : 2 - ( 48 - 24 ) : 2 : 6 - 3 = 0
d) x + 5 . 2 - ( 32 + 16 . 3 : 16 -15 ) = 0
390-(x-7)=169:13
390-(x-7)=13
X-7=390-13
X-7=377
X=377+7
X=384
phần a bạn ở dưới làm r nhé
phần b chép sai đề
phần c :
x - 6 : 2 - ( 48 - 24 ) : 2 : 6 - 3 = 0
<=>x - 3 - 24 : 12 - 3 = 0
<=>x - 3 - 2 - 3 = 0
<=>x=8
Vậy x = 8
phần d :
x + 5 . 2 - ( 32 + 16 . 3 : 16 - 15 ) = 0
<=>x + 10 - ( 32 + 3 - 15 ) = 0
<=> x + 10 - 20 = 0
<=>x = 10
Vậy x = 10
a) 390 - ( x - 7 ) = 169 : 13
390 - ( x - 7 ) = 13
x - 7 = 390 - 13
x - 7 = 377
x = 377 + 7
x = 384
b) ( x - 110 ) : 7 - 33 - 23 . 3 ( Sai )
c ) x - 6 : 2 - ( 48 - 24 ) : 2 : 6 - 3 = 0
x - 6 : 2 - 24 : 2 : 6 = 0 + 3
x - 3 - 12 : 6 = 3
x - 3 - 2 = 3
x - ( 3 + 2 ) = 3
x - 5 = 3
x = 3 + 5
x = 8
d) x + 5 . 2 - ( 32 +16 . 3 : 16 - 15 ) = 0
x + 10 - ( 32 + 3 - 15 ) = 0
x + 10 - 20 = 0
x + 10 = 0 + 20
x + 10 = 20
x = 20 - 10
x = 10
Tìm x biết :
a) 390 - ( x - 7 ) = 169 : 13
b) ( x - 110 ) : 7 - 33 - 23 . 3
c) x - 6 : 2 - ( 48 - 24 ) : 2 : 6 - 3 = 0
d) x + 5 . 2 - ( 32 + 16 . 3 : 16 - 15 ) = 0
hình như bài làm r bạn ạ :0 mình giải r đấy xem lại nhé :V
a) \(390-\left(x-7\right)=169:13\)
\(390-\left(x-7\right)=13\)
\(x-7=390-13\)
\(x-7=377\)
\(x=384\)
b) \(\left(x-110\right):7-3^3-2^3.3\)
Đề sai nhé bạn
c) \(x-6:2-\left(48-24\right):2:6-3=0\)
\(x-3-\left(24\right):2:6=3\)
\(x-3-\left(24\right):2=18\)
\(x-3-\left(24\right)=36\)
\(x-3=36+24\)
\(x-3=60\)
\(x=63\)
d) \(x+5.2-\left(32+16.3:16-15\right)=0\)
\(x+10-\left(32+48:16-15\right)=0\)
\(x+10-\left(32+3-15\right)=0\)
\(x+10-20=0\)
\(x+10=20\)
\(x=10\)
Tìm x biết:
a.390-(x-7)=169:13
b.(x-140):7=33--23.3
c.x-6:2-(48-24):2:6-3=0
Mk đang cần rất gấp,ai nhanh mk cho 2 tick luôn nhé.
a.390 - (x - 7) = 169 : 13
390 - (x - 7) = 13
x - 7 = 390 - 13
x = 377 + 7
x = 384
b.(x - 140) : 7 = 33 - 23.3
(x - 140) : 7 = 3
x - 140 = 3 . 7
x = 21 + 140
x = 161
c.x - 6:2 - (48-24):2: 6-3 = 0
x - 3 -2 - 3 = 0
x = 3 + 2 + 3
x = 8
\(a.390-\left(x-7\right)=169:13\)
\(390-\left(x-7\right)=13\)
\(\left(x-7\right)=390-13\)
\(x-7=377\)
\(x=377+7\)
Vậy \(x=384\)
\(b.\left(x-140\right):7=3^3--2^3.3\)
\(\left(x-140\right):7=3^3+2^3.3\)
\(\left(x-140\right):7=27+8.3\)
\(\left(x-140\right):7=27+24\)
\(\left(x-140\right):7=51\)
\(\left(x-140\right)=51.7\)
\(x-140=357\)
\(x=357+140\)
Vậy \(x=497\)
\(c.x-6:2-\left(48-24\right):2:6-3=0\)
\(x-3-24:2:6-3=0\)
\(x-3-12:6-3=0\)
\(x-3-2-3=0\)
\(x-\left(-2\right)=0\)
\(x+2=0\)
\(x=0-2\)
Vậy \(x=-2\)
Chúc bạn học tốt nha!
Tìm x biết:
a) 390 - ( x - 7 ) = 169 : 13 b) ( x - 140 ) : 7 = 33 - 23 . 3
a)
\(390-x+7=13\)
\(\Rightarrow397-x=13\)
\(\Rightarrow x=384\)
b)
\(\left(140-x\right):7=27-24\)
\(140-x=21\)
x=119
a) \(390-\left(x-7\right)=169:13\)
\(390-\left(x-7\right)=13\)
\(x-7=390-13\)
\(x-7=377\)
\(x=377+7\)
\(x=384\)
Vậy \(x=384\)
b) \(\left(x-140\right):7=3^2-2^3\cdot3\)
\(\left(x-140\right):7=-15\)
\(x-140=\left(-15\right)\cdot7\)
\(x-140=-105\)
\(x=\left(-105\right)+140\)
\(x=35\)
Vậy \(x=35\)
Bài 2. Tìm x, biết:
1) 48 - 3(x + 5) = 24 2) 2x - 20 = 35 : 33 | 3) 1230 : 3(x - 20) = 10 4) 390 - (x - 7) = 169 :13 |
giải giúp em với ạ
Tìm x , biết :
a , 390 - ( x - 7 ) = 169 : 13
b , ( x - 140 ) : 7 = 32 - 23 . 3
c , 3x = 33 . 35
d , 2x = 4 . 128
a. 390 - ( x - 7 ) = 169 : 13
390 - ( x - 7 ) = 13
x - 7 = 390 - 13
x - 7 = 377
x = 377 + 7
x = 384.
b. ( x - 140 ) : 7 = 9 - 8 . 3
( x - 140 ) : 7 = đề sai zồi nha, trừ khi nó là số âm.
tick cho m nhaaaaaaaaaaa
a , 390 - ( x - 7 ) = 169 : 13
390 - ( x - 7 ) =12
( x - 7 ) =390-12
( x - 7 ) =378
x=378+7
x=385
b ( x - 140 ) : 7 = 32 - 23 :3
( x - 140 ) : 7 = 9-8:3
( x - 140 ) : 7 = đề sai bạn ơi
c , 3x = 33 . 35
3x=38
=>x=8
d , 2x = 4 . 128
2x =512
2x=210
=> x=10