30x+40(15-x)=520

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Solution for 30x+40(15-x)=520 equation:


Simplifying
30x + 40(15 + -1x) = 520
30x + (15 * 40 + -1x * 40) = 520
30x + (600 + -40x) = 520

Reorder the terms:
600 + 30x + -40x = 520

Combine like terms: 30x + -40x = -10x
600 + -10x = 520

Solving
600 + -10x = 520

Solving for variable 'x'.

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

Add '-600' to each side of the equation.
600 + -600 + -10x = 520 + -600

Combine like terms: 600 + -600 = 0
0 + -10x = 520 + -600
-10x = 520 + -600

Combine like terms: 520 + -600 = -80
-10x = -80

Divide each side by '-10'.
x = 8

Simplifying
x = 8

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