x+45=2x+21

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Solution for x+45=2x+21 equation:


Simplifying
x + 45 = 2x + 21

Reorder the terms:
45 + x = 2x + 21

Reorder the terms:
45 + x = 21 + 2x

Solving
45 + x = 21 + 2x

Solving for variable 'x'.

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

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

Combine like terms: x + -2x = -1x
45 + -1x = 21 + 2x + -2x

Combine like terms: 2x + -2x = 0
45 + -1x = 21 + 0
45 + -1x = 21

Add '-45' to each side of the equation.
45 + -45 + -1x = 21 + -45

Combine like terms: 45 + -45 = 0
0 + -1x = 21 + -45
-1x = 21 + -45

Combine like terms: 21 + -45 = -24
-1x = -24

Divide each side by '-1'.
x = 24

Simplifying
x = 24

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