3(5x-13)=21

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Solution for 3(5x-13)=21 equation:


Simplifying
3(5x + -13) = 21

Reorder the terms:
3(-13 + 5x) = 21
(-13 * 3 + 5x * 3) = 21
(-39 + 15x) = 21

Solving
-39 + 15x = 21

Solving for variable 'x'.

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

Add '39' to each side of the equation.
-39 + 39 + 15x = 21 + 39

Combine like terms: -39 + 39 = 0
0 + 15x = 21 + 39
15x = 21 + 39

Combine like terms: 21 + 39 = 60
15x = 60

Divide each side by '15'.
x = 4

Simplifying
x = 4

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