81=-3(8r+5)

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


Simplifying
81 = -3(8r + 5)

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

Solving
81 = -15 + -24r

Solving for variable 'r'.

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

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

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

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

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

Combine like terms: -15 + -81 = -96
24r = -96

Divide each side by '24'.
r = -4

Simplifying
r = -4

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