4+2x+15-x=21

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Solution for 4+2x+15-x=21 equation:


Simplifying
4 + 2x + 15 + -1x = 21

Reorder the terms:
4 + 15 + 2x + -1x = 21

Combine like terms: 4 + 15 = 19
19 + 2x + -1x = 21

Combine like terms: 2x + -1x = 1x
19 + 1x = 21

Solving
19 + 1x = 21

Solving for variable 'x'.

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

Add '-19' to each side of the equation.
19 + -19 + 1x = 21 + -19

Combine like terms: 19 + -19 = 0
0 + 1x = 21 + -19
1x = 21 + -19

Combine like terms: 21 + -19 = 2
1x = 2

Divide each side by '1'.
x = 2

Simplifying
x = 2

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