7x+5x-40=80-8y

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Solution for 7x+5x-40=80-8y equation:


Simplifying
7x + 5x + -40 = 80 + -8y

Reorder the terms:
-40 + 7x + 5x = 80 + -8y

Combine like terms: 7x + 5x = 12x
-40 + 12x = 80 + -8y

Solving
-40 + 12x = 80 + -8y

Solving for variable 'x'.

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

Add '40' to each side of the equation.
-40 + 40 + 12x = 80 + 40 + -8y

Combine like terms: -40 + 40 = 0
0 + 12x = 80 + 40 + -8y
12x = 80 + 40 + -8y

Combine like terms: 80 + 40 = 120
12x = 120 + -8y

Divide each side by '12'.
x = 10 + -0.6666666667y

Simplifying
x = 10 + -0.6666666667y

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