3x+21=25-(2-x)

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Solution for 3x+21=25-(2-x) equation:


Simplifying
3x + 21 = 25 + -1(2 + -1x)

Reorder the terms:
21 + 3x = 25 + -1(2 + -1x)
21 + 3x = 25 + (2 * -1 + -1x * -1)
21 + 3x = 25 + (-2 + 1x)

Combine like terms: 25 + -2 = 23
21 + 3x = 23 + 1x

Solving
21 + 3x = 23 + 1x

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 + 3x + -1x = 23 + 1x + -1x

Combine like terms: 3x + -1x = 2x
21 + 2x = 23 + 1x + -1x

Combine like terms: 1x + -1x = 0
21 + 2x = 23 + 0
21 + 2x = 23

Add '-21' to each side of the equation.
21 + -21 + 2x = 23 + -21

Combine like terms: 21 + -21 = 0
0 + 2x = 23 + -21
2x = 23 + -21

Combine like terms: 23 + -21 = 2
2x = 2

Divide each side by '2'.
x = 1

Simplifying
x = 1

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