(x-5).126=134
Tìm x biết: 420+65 . 4=(x + 175) : 5+ 30
882 : (2 . x - 15) = 18
x - 4867= ( 175 . 2050 . 70) : 25 + 23
134 - [ (96 - 7 . x) : 4-2]= 126
4 - {100-[ (100-5 . x) : 8-5] :10} : 25= 0
cần câu trả lời gấp, ai nhanh mik tick cho ạ
\(1) 420+65.4=(x+175):5+30\)
\(\implies 420+260=(x+175):5+30\)
\(\implies 680=(x+175):5+30\)
\(\implies 650=(x+175):5\)
\(\implies 650.5-175=x\)
\(\implies 3075=x\)
\(2)x-4867=(175.2050.70):25+23\)
\(\implies x-4867=1004500+23\)
\(\implies x-4867=1004523\)
\(\implies x=1009390\)
\(3) 134-[(96-7x):4-2]=126\)
\(\implies (96-7x):4-2=8\)
\(\implies(96-7x):4=10\)
\(\implies 96-7x=40\)
\(\implies 7x=56\)
\(\implies x=8\)
\(4) 4-\{100-[(100-5x):8-5]:10\}:25=0\)
\(\implies 4-\{100-[(100-5x):8-5]:10\}=0\)
\(\implies 100-[(100-5x):8-5]:10=4\)
\(\implies 100-[(100-5x):8-5]=40\)
\(\implies (100-5x):8-5=60\)
\(\implies (100-5x):8=65\)
\(\implies 100-5x=520\)
\(\implies 5x=-420\)
\(\implies x=-84\)
~ Hok tốt a~
ban nao biet thi minh h
Tìm số tự nhiên x biết :
a ) ( 3247 - 3x ) × 15 = 270
b ) 12 × ( 134 - x ) - 126 = 54
c ) ( 4x + 3 )3 = 64
b, 12 . (134-x)-126=54
=> 12 . (134-x)=54+126=180
=> 134-x=180:12=15
=> x=134-15=119
vậy x=119
c, (4x +3)3 = 64
ta có: 43 = 64
=> 4x+3=4
=> 4x =4-3=1
=> x=0
vậy x=0
phần a không biết đề sai hay thế nào mà t tính không ra kết quả
a) (3227+3x).15=270
3227+3x = 270:15
3227+3x = 18
3x = 18-3227
3x = -3209
Từ đây có thể kết luận rằng x vô hợp lý
b) 12.(134-x)-126 = 54
12(134-x) = 54+126
12(134-x) = 180
134-x = 180:12
134-x = 15
x = 134-15
x = 119
c) (4x+3)3 = 64
<=> 4x+3 = 4
4x = 4-3
4x = 1
=> x = 0
Tính nhanh : 4*126*26
134*100+250*100-84*100
giải ra cẩn thận nhé ai dúng tk cho
134 x 100 + 250 x 100 - 84 x 100
= (134 + 250 - 84 ) x 100
= ( 384 - 84 0 x 100
= 300 x 100
= 30000
a, 13104
b,134*100+250*100-84*100=100*(134+250-84)=100*300=30000
134*100+250x100-84x100
=100x(134+250-84)
=100x300
=30000
a) x – 4702 = 9198 c) x + 37206 = 108 927
b) 485 126 + x = 854 609 d) 780 134 – x = 89 476
bài khó thế bạn
\(a,x-4702=9198\)
<=>\(x=9198+4702\)
<=>\(x=13900\)
\(b,485126+x=854609\)
<=>\(x=854609-485126\)
<=>\(x=369483\)
\(c,x+37206=108927\)
<=>\(x=108927-37206\)
<=>\(x=71721\)
\(d,780134-x=89476\)
<=>\(x=780134-89476\)
<=>\(x=690658\)
a) x – 4702 = 9198
x = 9198 + 4702
x = 13900
c) x + 37206 = 108 927
x = 108927 - 37206
x = 71721
b) 485 126 + x = 854 609
x = 854609 - 485126
x = 369483
d) 780 134 – x = 89 476
x = 780134 - 89476
x = 690658
Tính nhanh
a) 126 x 4 + 126 x 5 + 126
b ) 184 x 100 - 50 x 100
a) 126 x 4 + 126 x 5 + 126
= 126 x 4 + 126 x 5 + 126 x 1
= 126 x ( 4 + 5 + 1 )
= 126 x 10
= 1260
b) 184 x 100 - 50 x 100
= ( 184 - 50 ) x 100
= 134 x 100
= 13400
126 x 4 + 126 x 5 + 126
= 126 x ( 4 + 5 + 1 )
= 126 x 10
= 1260
134 x 4 x 5
134 x 4 x 5
= 134 x ( 4x 5 )
= 134 x ( 2 x 10 )
= 134 x 2 x 10
= 268 x 10
= 2680
k mình nhá
134x4x5=2680
Ai k hộ mink mink biết ơn
17/5 :x=134
\(...\Rightarrow x=\dfrac{17}{5}:134=\dfrac{17}{5}\dfrac{1}{134}=\dfrac{17}{670}\)
\(\dfrac{17}{5}:x=134\\ \Rightarrow x=\dfrac{17}{5}:134\\ \Rightarrow x=\dfrac{17}{670}\)
2x+3x=57:5
7.(42- x) = 53+134
X+18÷32=5×42
134-5.(x+4)=34
134 - 5. ( x + 4 ) = 34
5 . ( x + 4 ) = 134 - 34
5 . ( x + 4 ) = 100
( x + 4 ) = 100: 5
( x + 4 ) = 20
x = 20 - 4
x = 16
134 - 5(x+4) = 34
=> 134 - 5x - 20 = 34
=> 114 - 5x = 34
=> 5x = 114 - 34
=> 5x = 80
=> x= 16
5(x+4) = 134-34
5(x+4) = 100
(x+4) = 100 : 5
x+4 = 20
x = 20-4
x = 16