2x+21-x=7+5x-6

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Solution for 2x+21-x=7+5x-6 equation:


Simplifying
2x + 21 + -1x = 7 + 5x + -6

Reorder the terms:
21 + 2x + -1x = 7 + 5x + -6

Combine like terms: 2x + -1x = 1x
21 + 1x = 7 + 5x + -6

Reorder the terms:
21 + 1x = 7 + -6 + 5x

Combine like terms: 7 + -6 = 1
21 + 1x = 1 + 5x

Solving
21 + 1x = 1 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
21 + 1x + -5x = 1 + 5x + -5x

Combine like terms: 1x + -5x = -4x
21 + -4x = 1 + 5x + -5x

Combine like terms: 5x + -5x = 0
21 + -4x = 1 + 0
21 + -4x = 1

Add '-21' to each side of the equation.
21 + -21 + -4x = 1 + -21

Combine like terms: 21 + -21 = 0
0 + -4x = 1 + -21
-4x = 1 + -21

Combine like terms: 1 + -21 = -20
-4x = -20

Divide each side by '-4'.
x = 5

Simplifying
x = 5

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