7x+5x=2x+30+40

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Solution for 7x+5x=2x+30+40 equation:


Simplifying
7x + 5x = 2x + 30 + 40

Combine like terms: 7x + 5x = 12x
12x = 2x + 30 + 40

Reorder the terms:
12x = 30 + 40 + 2x

Combine like terms: 30 + 40 = 70
12x = 70 + 2x

Solving
12x = 70 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
12x + -2x = 70 + 2x + -2x

Combine like terms: 12x + -2x = 10x
10x = 70 + 2x + -2x

Combine like terms: 2x + -2x = 0
10x = 70 + 0
10x = 70

Divide each side by '10'.
x = 7

Simplifying
x = 7

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