20-9x=-7

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Solution for 20-9x=-7 equation: 


Simplifying
20 + -9x = -7

Solving
20 + -9x = -7

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + -9x = -7 + -20

Combine like terms: 20 + -20 = 0
0 + -9x = -7 + -20
-9x = -7 + -20

Combine like terms: -7 + -20 = -27
-9x = -27

Divide each side by '-9'.
x = 3

Simplifying
x = 3

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