3x+21=15x

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Solution for 3x+21=15x equation:


Simplifying
3x + 21 = 15x

Reorder the terms:
21 + 3x = 15x

Solving
21 + 3x = 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.
21 + 3x + -15x = 15x + -15x

Combine like terms: 3x + -15x = -12x
21 + -12x = 15x + -15x

Combine like terms: 15x + -15x = 0
21 + -12x = 0

Add '-21' to each side of the equation.
21 + -21 + -12x = 0 + -21

Combine like terms: 21 + -21 = 0
0 + -12x = 0 + -21
-12x = 0 + -21

Combine like terms: 0 + -21 = -21
-12x = -21

Divide each side by '-12'.
x = 1.75

Simplifying
x = 1.75

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