0.8x-0.2(30+x)=1.2(30)

Solution for 0.8x-0.2(30+x)=1.2(30) equation:

Simplifying
0.8x + -0.2(30 + x) = 1.2(30)
0.8x + (30 * -0.2 + x * -0.2) = 1.2(30)
0.8x + (-6 + -0.2x) = 1.2(30)

Reorder the terms:
-6 + 0.8x + -0.2x = 1.2(30)

Combine like terms: 0.8x + -0.2x = 0.6x
-6 + 0.6x = 1.2(30)

Multiply 1.2 * 30
-6 + 0.6x = 36

Solving
-6 + 0.6x = 36

Solving for variable 'x'.

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

Add '6' to each side of the equation.
-6 + 6 + 0.6x = 36 + 6

Combine like terms: -6 + 6 = 0
0 + 0.6x = 36 + 6
0.6x = 36 + 6

Combine like terms: 36 + 6 = 42
0.6x = 42

Divide each side by '0.6'.
x = 70

Simplifying
x = 70