21x-3=3x+69

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Solution for 21x-3=3x+69 equation:


Simplifying
21x + -3 = 3x + 69

Reorder the terms:
-3 + 21x = 3x + 69

Reorder the terms:
-3 + 21x = 69 + 3x

Solving
-3 + 21x = 69 + 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.
-3 + 21x + -3x = 69 + 3x + -3x

Combine like terms: 21x + -3x = 18x
-3 + 18x = 69 + 3x + -3x

Combine like terms: 3x + -3x = 0
-3 + 18x = 69 + 0
-3 + 18x = 69

Add '3' to each side of the equation.
-3 + 3 + 18x = 69 + 3

Combine like terms: -3 + 3 = 0
0 + 18x = 69 + 3
18x = 69 + 3

Combine like terms: 69 + 3 = 72
18x = 72

Divide each side by '18'.
x = 4

Simplifying
x = 4

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