7x+400=12x

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Solution for 7x+400=12x equation:


Simplifying
7x + 400 = 12x

Reorder the terms:
400 + 7x = 12x

Solving
400 + 7x = 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.
400 + 7x + -12x = 12x + -12x

Combine like terms: 7x + -12x = -5x
400 + -5x = 12x + -12x

Combine like terms: 12x + -12x = 0
400 + -5x = 0

Add '-400' to each side of the equation.
400 + -400 + -5x = 0 + -400

Combine like terms: 400 + -400 = 0
0 + -5x = 0 + -400
-5x = 0 + -400

Combine like terms: 0 + -400 = -400
-5x = -400

Divide each side by '-5'.
x = 80

Simplifying
x = 80

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