21(x-15)=78

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Solution for 21(x-15)=78 equation:


Simplifying
21(x + -15) = 78

Reorder the terms:
21(-15 + x) = 78
(-15 * 21 + x * 21) = 78
(-315 + 21x) = 78

Solving
-315 + 21x = 78

Solving for variable 'x'.

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

Add '315' to each side of the equation.
-315 + 315 + 21x = 78 + 315

Combine like terms: -315 + 315 = 0
0 + 21x = 78 + 315
21x = 78 + 315

Combine like terms: 78 + 315 = 393
21x = 393

Divide each side by '21'.
x = 18.71428571

Simplifying
x = 18.71428571

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