-2x+5+4x=21

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Solution for -2x+5+4x=21 equation:


Simplifying
-2x + 5 + 4x = 21

Reorder the terms:
5 + -2x + 4x = 21

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

Solving
5 + 2x = 21

Solving for variable 'x'.

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

Add '-5' to each side of the equation.
5 + -5 + 2x = 21 + -5

Combine like terms: 5 + -5 = 0
0 + 2x = 21 + -5
2x = 21 + -5

Combine like terms: 21 + -5 = 16
2x = 16

Divide each side by '2'.
x = 8

Simplifying
x = 8

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