-2x+4x-21=25

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Solution for -2x+4x-21=25 equation:


Simplifying
-2x + 4x + -21 = 25

Reorder the terms:
-21 + -2x + 4x = 25

Combine like terms: -2x + 4x = 2x
-21 + 2x = 25

Solving
-21 + 2x = 25

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + 2x = 25 + 21

Combine like terms: -21 + 21 = 0
0 + 2x = 25 + 21
2x = 25 + 21

Combine like terms: 25 + 21 = 46
2x = 46

Divide each side by '2'.
x = 23

Simplifying
x = 23

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