21=6x+5-2x

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


Simplifying
21 = 6x + 5 + -2x

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

Combine like terms: 6x + -2x = 4x
21 = 5 + 4x

Solving
21 = 5 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
21 + -4x = 5 + 4x + -4x

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

Add '-21' to each side of the equation.
21 + -21 + -4x = 5 + -21

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

Combine like terms: 5 + -21 = -16
-4x = -16

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

Simplifying
x = 4

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