-7(x+9)=8x+42

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Solution for -7(x+9)=8x+42 equation:


Simplifying
-7(x + 9) = 8x + 42

Reorder the terms:
-7(9 + x) = 8x + 42
(9 * -7 + x * -7) = 8x + 42
(-63 + -7x) = 8x + 42

Reorder the terms:
-63 + -7x = 42 + 8x

Solving
-63 + -7x = 42 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
-63 + -7x + -8x = 42 + 8x + -8x

Combine like terms: -7x + -8x = -15x
-63 + -15x = 42 + 8x + -8x

Combine like terms: 8x + -8x = 0
-63 + -15x = 42 + 0
-63 + -15x = 42

Add '63' to each side of the equation.
-63 + 63 + -15x = 42 + 63

Combine like terms: -63 + 63 = 0
0 + -15x = 42 + 63
-15x = 42 + 63

Combine like terms: 42 + 63 = 105
-15x = 105

Divide each side by '-15'.
x = -7

Simplifying
x = -7

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