5+-2x+7=20

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


Simplifying
5 + -2x + 7 = 20

Reorder the terms:
5 + 7 + -2x = 20

Combine like terms: 5 + 7 = 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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