21x-3=17x+9

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Solution for 21x-3=17x+9 equation:


Simplifying
21x + -3 = 17x + 9

Reorder the terms:
-3 + 21x = 17x + 9

Reorder the terms:
-3 + 21x = 9 + 17x

Solving
-3 + 21x = 9 + 17x

Solving for variable 'x'.

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

Add '-17x' to each side of the equation.
-3 + 21x + -17x = 9 + 17x + -17x

Combine like terms: 21x + -17x = 4x
-3 + 4x = 9 + 17x + -17x

Combine like terms: 17x + -17x = 0
-3 + 4x = 9 + 0
-3 + 4x = 9

Add '3' to each side of the equation.
-3 + 3 + 4x = 9 + 3

Combine like terms: -3 + 3 = 0
0 + 4x = 9 + 3
4x = 9 + 3

Combine like terms: 9 + 3 = 12
4x = 12

Divide each side by '4'.
x = 3

Simplifying
x = 3

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