0.3(x+20)+1.5x=87

Solution for 0.3(x+20)+1.5x=87 equation:

Simplifying
0.3(x + 20) + 1.5x = 87

Reorder the terms:
0.3(20 + x) + 1.5x = 87
(20 * 0.3 + x * 0.3) + 1.5x = 87
(6 + 0.3x) + 1.5x = 87

Combine like terms: 0.3x + 1.5x = 1.8x
6 + 1.8x = 87

Solving
6 + 1.8x = 87

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 + 1.8x = 87 + -6

Combine like terms: 6 + -6 = 0
0 + 1.8x = 87 + -6
1.8x = 87 + -6

Combine like terms: 87 + -6 = 81
1.8x = 81

Divide each side by '1.8'.
x = 45

Simplifying
x = 45