.8x-.7(60+x)=-.65(60)

Solution for .8x-.7(60+x)=-.65(60) equation:

Simplifying
0.8x + -0.7(60 + x) = -0.65(60)
0.8x + (60 * -0.7 + x * -0.7) = -0.65(60)
0.8x + (-42 + -0.7x) = -0.65(60)

Reorder the terms:
-42 + 0.8x + -0.7x = -0.65(60)

Combine like terms: 0.8x + -0.7x = 0.1x
-42 + 0.1x = -0.65(60)

Multiply -0.65 * 60
-42 + 0.1x = -39

Solving
-42 + 0.1x = -39

Solving for variable 'x'.

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

Add '42' to each side of the equation.
-42 + 42 + 0.1x = -39 + 42

Combine like terms: -42 + 42 = 0
0 + 0.1x = -39 + 42
0.1x = -39 + 42

Combine like terms: -39 + 42 = 3
0.1x = 3

Divide each side by '0.1'.
x = 30

Simplifying
x = 30