3(5x-4)=-21

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Solution for 3(5x-4)=-21 equation: 


Simplifying
3(5x + -4) = -21

Reorder the terms:
3(-4 + 5x) = -21
(-4 * 3 + 5x * 3) = -21
(-12 + 15x) = -21

Solving
-12 + 15x = -21

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 15x = -21 + 12

Combine like terms: -12 + 12 = 0
0 + 15x = -21 + 12
15x = -21 + 12

Combine like terms: -21 + 12 = -9
15x = -9

Divide each side by '15'.
x = -0.6

Simplifying
x = -0.6

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