(2x-21)=(x+4)

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Solution for (2x-21)=(x+4) equation:


Simplifying
(2x + -21) = (x + 4)

Reorder the terms:
(-21 + 2x) = (x + 4)

Remove parenthesis around (-21 + 2x)
-21 + 2x = (x + 4)

Reorder the terms:
-21 + 2x = (4 + x)

Remove parenthesis around (4 + x)
-21 + 2x = 4 + x

Solving
-21 + 2x = 4 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-21 + 2x + -1x = 4 + x + -1x

Combine like terms: 2x + -1x = 1x
-21 + 1x = 4 + x + -1x

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

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

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

Combine like terms: 4 + 21 = 25
1x = 25

Divide each side by '1'.
x = 25

Simplifying
x = 25

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