7x-15=10x-42

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Solution for 7x-15=10x-42 equation:


Simplifying
7x + -15 = 10x + -42

Reorder the terms:
-15 + 7x = 10x + -42

Reorder the terms:
-15 + 7x = -42 + 10x

Solving
-15 + 7x = -42 + 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.
-15 + 7x + -10x = -42 + 10x + -10x

Combine like terms: 7x + -10x = -3x
-15 + -3x = -42 + 10x + -10x

Combine like terms: 10x + -10x = 0
-15 + -3x = -42 + 0
-15 + -3x = -42

Add '15' to each side of the equation.
-15 + 15 + -3x = -42 + 15

Combine like terms: -15 + 15 = 0
0 + -3x = -42 + 15
-3x = -42 + 15

Combine like terms: -42 + 15 = -27
-3x = -27

Divide each side by '-3'.
x = 9

Simplifying
x = 9

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