7x+9-2x=20

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Solution for 7x+9-2x=20 equation: 


Simplifying
7x + 9 + -2x = 20

Reorder the terms:
9 + 7x + -2x = 20

Combine like terms: 7x + -2x = 5x
9 + 5x = 20

Solving
9 + 5x = 20

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 5x = 20 + -9

Combine like terms: 9 + -9 = 0
0 + 5x = 20 + -9
5x = 20 + -9

Combine like terms: 20 + -9 = 11
5x = 11

Divide each side by '5'.
x = 2.2

Simplifying
x = 2.2

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