4x + 8x - 2x = 100
12x - 2x = 100
10x = 100
=> x = 100 : 10
=> x = 10
\(4x+8x-2x=10^2\)
\(\Rightarrow\left(4+8-2\right).x=100\)
\(10.x=100\)
\(x=100:10\)
\(x=10\)
4x + 8x -2x = 102
x.(4 + 8 - 2) = 100
x . 10 = 100
x = 100 : 10
x = 10
ỦNG HỘ NHA
4x+8x-2x=100
x(4+8-2)=100
x.10=100
x=100:10
x=10
4x+8x-2x=102
4x + 8x - 2x = 100
12x - 2x = 100
10x = 100
x = 100: 10
x = 10
Vậy x =10
4x + 8x - 2x = 100
x.(4 + 8 - 2)= 100
x.10 =100
x = 100:10
x =10