8x-3x+87=8x+42

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Solution for 8x-3x+87=8x+42 equation:


Simplifying
8x + -3x + 87 = 8x + 42

Reorder the terms:
87 + 8x + -3x = 8x + 42

Combine like terms: 8x + -3x = 5x
87 + 5x = 8x + 42

Reorder the terms:
87 + 5x = 42 + 8x

Solving
87 + 5x = 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.
87 + 5x + -8x = 42 + 8x + -8x

Combine like terms: 5x + -8x = -3x
87 + -3x = 42 + 8x + -8x

Combine like terms: 8x + -8x = 0
87 + -3x = 42 + 0
87 + -3x = 42

Add '-87' to each side of the equation.
87 + -87 + -3x = 42 + -87

Combine like terms: 87 + -87 = 0
0 + -3x = 42 + -87
-3x = 42 + -87

Combine like terms: 42 + -87 = -45
-3x = -45

Divide each side by '-3'.
x = 15

Simplifying
x = 15

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