15(x-4)=6x+21

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Solution for 15(x-4)=6x+21 equation:


Simplifying
15(x + -4) = 6x + 21

Reorder the terms:
15(-4 + x) = 6x + 21
(-4 * 15 + x * 15) = 6x + 21
(-60 + 15x) = 6x + 21

Reorder the terms:
-60 + 15x = 21 + 6x

Solving
-60 + 15x = 21 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
-60 + 15x + -6x = 21 + 6x + -6x

Combine like terms: 15x + -6x = 9x
-60 + 9x = 21 + 6x + -6x

Combine like terms: 6x + -6x = 0
-60 + 9x = 21 + 0
-60 + 9x = 21

Add '60' to each side of the equation.
-60 + 60 + 9x = 21 + 60

Combine like terms: -60 + 60 = 0
0 + 9x = 21 + 60
9x = 21 + 60

Combine like terms: 21 + 60 = 81
9x = 81

Divide each side by '9'.
x = 9

Simplifying
x = 9

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