30=(9x-42)+(x+15)

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Solution for 30=(9x-42)+(x+15) equation:


Simplifying
30 = (9x + -42) + (x + 15)

Reorder the terms:
30 = (-42 + 9x) + (x + 15)

Remove parenthesis around (-42 + 9x)
30 = -42 + 9x + (x + 15)

Reorder the terms:
30 = -42 + 9x + (15 + x)

Remove parenthesis around (15 + x)
30 = -42 + 9x + 15 + x

Reorder the terms:
30 = -42 + 15 + 9x + x

Combine like terms: -42 + 15 = -27
30 = -27 + 9x + x

Combine like terms: 9x + x = 10x
30 = -27 + 10x

Solving
30 = -27 + 10x

Solving for variable 'x'.

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

Add '-10x' to each side of the equation.
30 + -10x = -27 + 10x + -10x

Combine like terms: 10x + -10x = 0
30 + -10x = -27 + 0
30 + -10x = -27

Add '-30' to each side of the equation.
30 + -30 + -10x = -27 + -30

Combine like terms: 30 + -30 = 0
0 + -10x = -27 + -30
-10x = -27 + -30

Combine like terms: -27 + -30 = -57
-10x = -57

Divide each side by '-10'.
x = 5.7

Simplifying
x = 5.7

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