x+9-7=20

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Solution for x+9-7=20 equation: 


Simplifying
x + 9 + -7 = 20

Reorder the terms:
9 + -7 + x = 20

Combine like terms: 9 + -7 = 2
2 + x = 20

Solving
2 + x = 20

Solving for variable 'x'.

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

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

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

Combine like terms: 20 + -2 = 18
x = 18

Simplifying
x = 18

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