-7(0.1x+0.2)-1.2=-0.5

Solution for -7(0.1x+0.2)-1.2=-0.5 equation:

Simplifying
-7(0.1x + 0.2) + -1.2 = -0.5

Reorder the terms:
-7(0.2 + 0.1x) + -1.2 = -0.5
(0.2 * -7 + 0.1x * -7) + -1.2 = -0.5
(-1.4 + -0.7x) + -1.2 = -0.5

Reorder the terms:
-1.4 + -1.2 + -0.7x = -0.5

Combine like terms: -1.4 + -1.2 = -2.6
-2.6 + -0.7x = -0.5

Solving
-2.6 + -0.7x = -0.5

Solving for variable 'x'.

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

Add '2.6' to each side of the equation.
-2.6 + 2.6 + -0.7x = -0.5 + 2.6

Combine like terms: -2.6 + 2.6 = 0.0
0.0 + -0.7x = -0.5 + 2.6
-0.7x = -0.5 + 2.6

Combine like terms: -0.5 + 2.6 = 2.1
-0.7x = 2.1

Divide each side by '-0.7'.
x = -3

Simplifying
x = -3