7+5+2x=20

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Solution for 7+5+2x=20 equation: 


Simplifying
7 + 5 + 2x = 20

Combine like terms: 7 + 5 = 12
12 + 2x = 20

Solving
12 + 2x = 20

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 2x = 20 + -12

Combine like terms: 12 + -12 = 0
0 + 2x = 20 + -12
2x = 20 + -12

Combine like terms: 20 + -12 = 8
2x = 8

Divide each side by '2'.
x = 4

Simplifying
x = 4

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