7x+9-2x=20+9x+1

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Solution for 7x+9-2x=20+9x+1 equation:


Simplifying
7x + 9 + -2x = 20 + 9x + 1

Reorder the terms:
9 + 7x + -2x = 20 + 9x + 1

Combine like terms: 7x + -2x = 5x
9 + 5x = 20 + 9x + 1

Reorder the terms:
9 + 5x = 20 + 1 + 9x

Combine like terms: 20 + 1 = 21
9 + 5x = 21 + 9x

Solving
9 + 5x = 21 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
9 + 5x + -9x = 21 + 9x + -9x

Combine like terms: 5x + -9x = -4x
9 + -4x = 21 + 9x + -9x

Combine like terms: 9x + -9x = 0
9 + -4x = 21 + 0
9 + -4x = 21

Add '-9' to each side of the equation.
9 + -9 + -4x = 21 + -9

Combine like terms: 9 + -9 = 0
0 + -4x = 21 + -9
-4x = 21 + -9

Combine like terms: 21 + -9 = 12
-4x = 12

Divide each side by '-4'.
x = -3

Simplifying
x = -3

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