x-10=x/2
Simplify both sides of the equation.
x−10 = x /2
x+-10 = 1/2 x
x-10 = 1/2 x
Subtract 1/2 x from both sides.
x-10-1/2 x = 1/2 x - 1/2 x
1/2 x-10 = 0
Add 10 to both sides.
1/2 x-10+10 = 0+10
1/2 x = 10
Multiply both sides by 2.
2*(1/2 x) = (2)*(10)
Your answer should be: x = 20