20=5+5+x-7

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


Simplifying
20 = 5 + 5 + x + -7

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

Combine like terms: 5 + 5 = 10
20 = 10 + -7 + x

Combine like terms: 10 + -7 = 3
20 = 3 + x

Solving
20 = 3 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
20 + -1x = 3 + x + -1x

Combine like terms: x + -1x = 0
20 + -1x = 3 + 0
20 + -1x = 3

Add '-20' to each side of the equation.
20 + -20 + -1x = 3 + -20

Combine like terms: 20 + -20 = 0
0 + -1x = 3 + -20
-1x = 3 + -20

Combine like terms: 3 + -20 = -17
-1x = -17

Divide each side by '-1'.
x = 17

Simplifying
x = 17

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