140:X-8=7
140:(x-8)=7
140:(x-8)=7
x-8=140:7
x-8=20
x=20+8
x=28
140:(x-8)=7
x-8=140:7
x-8=20
x=20+8
x=28
140:(x-8)=7
=>x-8=140:7
=>x-8=20
=>x=20+8
=>x=28
Vậy x=28
140:(x-8)=7
140:(x-8)=7
x-8=140:7
x-8=20
x=20+8
x=28
tick đúng nha
Trả l
140 : ( x - 8 ) = 7
x - 8 = 140 : 7
x - 8 = 20
x = 20 + 8
x = 28
( X - 140 ) : 7 = 27 - 8 x 3
\(\left(x-140\right):7=27-8\times3\Rightarrow x=\left(27-24\right)\times7+140=161\)
Vậy x là 161
\(\left(x-140\right)\div7=27-8\times3\)
\(\Leftrightarrow\)\(\left(x-140\right)\div7=27-24\)
\(\Leftrightarrow\)\(\left(x-140\right)\div7=3\)
\(\Leftrightarrow\)\(\left(x-140\right)=3\times7\)
\(\Leftrightarrow\)\(x-140=21\)
\(\Leftrightarrow\)\(x=21+140\)
\(\Leftrightarrow\)\(x=161\)
140:10(x-8)=7 tìm x
140 : 10 ( x - 8 ) = 7
10 ( x - 8 ) = 140 : 7
10 ( x - 8 ) = 20
( x - 8 ) = 20 : 10
x - 8 = 2
x = 2 + 8
x = 10
14(x-8)=7
(x-8)=14:7
x-8=2
x=2+8
x=10
~~~~Học Tốt~~~~
140 : 10 ( x - 8 ) = 7
=> 10 ( x - 8 ) = 140 : 7 = 20
=> x - 8 = 20 : 10 = 2
=> x = 2 + 8 = 10
Tìm x:
a, 89 - ( 73-x ) = 20
b, 140 : ( x-8 ) = 7
a) 89 - (73 - x) = 20
73 - x = 89 - 20 = 69
x = 73 - 69 = 4
b) 140 : (x-8) = 7
x - 8 = 140 : 7 = 2
x = 8 + 2 = 10
\(a,89-\left(73-x\right)=20\\ 73-x=69\\ x=4\\ b,140:\left(x-8\right)=7\\ x-8=20\\ x=28\)
tìm x
137 + 4 ( 2x + 3) =200
200-6 . ( x-5) = 140
140 : (x-8)=7
giải hết cho tick
137+4 (2x+3)=200(hình như đề bài sai)
200-6(x-5)=140
6(x-5)=200-140
6(x-5)=60
x-5=60:6
x-5=10
x=10+5
x=15
140:(x-8)=7
x-8=140:7
x-8=20
x=20+8
x=28
137+4(2x+3)=200
4(2x+3)=200-137
4(2x+3)=63
2x+3=63:4
2x+3=\(\frac{63}{4}\)
2x=\(\frac{63}{4}\)-3
2x=\(\frac{51}{4}\)
x=\(\frac{51}{4}\):2
x=\(\frac{51}{8}\)
Vậy ...
200-6(x-5)=140
6(x-5)=200-140
6(x-5)=60
x-5=60:6
x-5=10
x=15
Vậy...
140:(x-8)=7
x-8=140:7
x-8=20
x=20+8
x=28
Vậy...
k mik nhé
137 + 4 ( 2x + 3) =200
4 (2x+3)=200-137
4 (2x+3)= 63
(2x+3)=63:4
2x+3= 15,75
2x =15,75-3
2x = 12,75
x =12,75:2
x =6,375
200-6 . ( x-5) = 140
6 (x-5) = 200-140
6 (x-5) = 60
(x-5) =60:6
x-5 = 10
x =10-5
x =5
140 : (x-8)=7
(x-8)=140:7
x-8= 20
x =20+8
x=28
giúp em bài này nha
a) 7x – 8 = 713
b) 71 – (33 + x) = 26
c) 140 : (x – 8) = 7
a) 7x - 8 = 713
7 x = 713 + 8
7x = 721
x = 721:7
x = 13
b)
71 - (33 + x) = 26
33 + x = 71 - 26
33 + x = 45
x = 45 - 33
x = 12
c) 140 : (x-8) = 7
x-8 = 140 : 7
x-8 = 20 + 8
x = 28
giai giup mik nha:
Bài 1 Tìm x
1.3/4:x/6=75/100
2.(1/4*x-1/8)*3/4-1/4
3.71+65*4=x+140/x +260
4.7878:(12*x-91)=78
5.2/7+3/7<x<14/5+7/5
6.(x+1)+(x+4)+(x+7)+(x+10)+....+(x+34)=330
7.96-3,75:x=94,5
8.(7*13+8*13):(29/3-x)=39
Lưu ý:câu3 có nghĩa là x+140 trên x rồi +260
1) 3/4 : x/6 = 75/100
x/6 = 3/4 : 75/100
x/6 = 1
x = 1*6
x = 6
Câu 6: Bạn xem ở đây: http://olm.vn/hoi-dap/question/615090.html
giai giup mik nha:
Bài 1 Tìm x
1.3/4:x/6=75/100
2.(1/4*x-1/8)*3/4-1/4
3.71+65*4=x+140/x +260
4.7878:(12*x-91)=78
5.2/7+3/7<x<14/5+7/5
6.(x+1)+(x+4)+(x+7)+(x+10)+....+(x+34)=330
7.96-3,75:x=94,5
8.(7*13+8*13):(29/3-x)=39
Lưu ý:câu3 có nghĩa là x+140 trên x rồi +260
1.\(\frac{3}{4}:\frac{x}{6}=\frac{75}{100}\) \(\Leftrightarrow\frac{3}{4}.6.\frac{1}{x}=\frac{3}{4}\)
\(\Leftrightarrow\frac{6}{x}=1\)
\(\Leftrightarrow x=\frac{1}{6}\)