390-(X-7)=169:3
390-(x-7)=169:3
390-(x-7)=169:13
390-(x-7)=169:13
390-(x-7)=13
(x-7)=390-13
(x-7)=377
x=377+7
x=384
390-(x-7)-169:13=0
390 - (x-7 ) - 169 : 13 = 0
390 - (x-7 ) - 13 = 0
390 - (x-7) = 13 +0
390 -(x-7 ) = 13
x-7 = 390 -13
x-7 = 377
x= 377 +7
x= 384
390-(x-7)-169:13=0
390-(x-7)-13=0
390-(x-7)=0+13
390-(x-7)=13
x-7=390-13
x-7=377
x=377+7
x=384
vậy x=384
390-(x-7)-13=0
390-(x-7)=0+13
390-(x-7)=13
x-7=390-13
x-7=377
x=377+7
x=384
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-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 ****
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 = 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 - 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 - 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 \(x=35\)