Solve the equation 4 (0.2x - 5) = 12.

Simplifying

4 (0.2x + - 5) = 12

Reorder the terms:

4 (-5 + 0.2x) = 12

(-5 * 4 + 0.2x * 4) = 12

(-20 + 0.8x) = 12

Solving

-20 + 0.8x = 12

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 + 0.8x = 12 + 20

Combine like terms: - 20 + 20 = 0

0 + 0.8x = 12 + 20

0.8x = 12 + 20

Combine like terms: 12 + 20 = 32

0.8x = 32

Divide each side by '0.8'.

x = 40

Simplifying

x = 40