.2(x+100)=10

Solution for .2(x+100)=10 equation:

Simplifying
0.2(x + 100) = 10

Reorder the terms:
0.2(100 + x) = 10
(100 * 0.2 + x * 0.2) = 10
(20 + 0.2x) = 10

Solving
20 + 0.2x = 10

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-20' to each side of the equation.
20 + -20 + 0.2x = 10 + -20

Combine like terms: 20 + -20 = 0
0 + 0.2x = 10 + -20
0.2x = 10 + -20

Combine like terms: 10 + -20 = -10
0.2x = -10

Divide each side by '0.2'.
x = -50

Simplifying
x = -50