-3(5x+8)=81

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Solution for -3(5x+8)=81 equation:


Simplifying
-3(5x + 8) = 81

Reorder the terms:
-3(8 + 5x) = 81
(8 * -3 + 5x * -3) = 81
(-24 + -15x) = 81

Solving
-24 + -15x = 81

Solving for variable 'x'.

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

Add '24' to each side of the equation.
-24 + 24 + -15x = 81 + 24

Combine like terms: -24 + 24 = 0
0 + -15x = 81 + 24
-15x = 81 + 24

Combine like terms: 81 + 24 = 105
-15x = 105

Divide each side by '-15'.
x = -7

Simplifying
x = -7

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