7x+40=12x-45

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Solution for 7x+40=12x-45 equation:


Simplifying
7x + 40 = 12x + -45

Reorder the terms:
40 + 7x = 12x + -45

Reorder the terms:
40 + 7x = -45 + 12x

Solving
40 + 7x = -45 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
40 + 7x + -12x = -45 + 12x + -12x

Combine like terms: 7x + -12x = -5x
40 + -5x = -45 + 12x + -12x

Combine like terms: 12x + -12x = 0
40 + -5x = -45 + 0
40 + -5x = -45

Add '-40' to each side of the equation.
40 + -40 + -5x = -45 + -40

Combine like terms: 40 + -40 = 0
0 + -5x = -45 + -40
-5x = -45 + -40

Combine like terms: -45 + -40 = -85
-5x = -85

Divide each side by '-5'.
x = 17

Simplifying
x = 17

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