45-3x=15x+21

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Solution for 45-3x=15x+21 equation:


Simplifying
45 + -3x = 15x + 21

Reorder the terms:
45 + -3x = 21 + 15x

Solving
45 + -3x = 21 + 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
45 + -3x + -15x = 21 + 15x + -15x

Combine like terms: -3x + -15x = -18x
45 + -18x = 21 + 15x + -15x

Combine like terms: 15x + -15x = 0
45 + -18x = 21 + 0
45 + -18x = 21

Add '-45' to each side of the equation.
45 + -45 + -18x = 21 + -45

Combine like terms: 45 + -45 = 0
0 + -18x = 21 + -45
-18x = 21 + -45

Combine like terms: 21 + -45 = -24
-18x = -24

Divide each side by '-18'.
x = 1.333333333

Simplifying
x = 1.333333333

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