21x+13=3x

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Solution for 21x+13=3x equation:


Simplifying
21x + 13 = 3x

Reorder the terms:
13 + 21x = 3x

Solving
13 + 21x = 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
13 + 21x + -3x = 3x + -3x

Combine like terms: 21x + -3x = 18x
13 + 18x = 3x + -3x

Combine like terms: 3x + -3x = 0
13 + 18x = 0

Add '-13' to each side of the equation.
13 + -13 + 18x = 0 + -13

Combine like terms: 13 + -13 = 0
0 + 18x = 0 + -13
18x = 0 + -13

Combine like terms: 0 + -13 = -13
18x = -13

Divide each side by '18'.
x = -0.7222222222

Simplifying
x = -0.7222222222

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