9x-7=21x+3

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Solution for 9x-7=21x+3 equation:


Simplifying
9x + -7 = 21x + 3

Reorder the terms:
-7 + 9x = 21x + 3

Reorder the terms:
-7 + 9x = 3 + 21x

Solving
-7 + 9x = 3 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
-7 + 9x + -21x = 3 + 21x + -21x

Combine like terms: 9x + -21x = -12x
-7 + -12x = 3 + 21x + -21x

Combine like terms: 21x + -21x = 0
-7 + -12x = 3 + 0
-7 + -12x = 3

Add '7' to each side of the equation.
-7 + 7 + -12x = 3 + 7

Combine like terms: -7 + 7 = 0
0 + -12x = 3 + 7
-12x = 3 + 7

Combine like terms: 3 + 7 = 10
-12x = 10

Divide each side by '-12'.
x = -0.8333333333

Simplifying
x = -0.8333333333

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