31=-3(5r+9)

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Solution for 31=-3(5r+9) equation:


Simplifying
31 = -3(5r + 9)

Reorder the terms:
31 = -3(9 + 5r)
31 = (9 * -3 + 5r * -3)
31 = (-27 + -15r)

Solving
31 = -27 + -15r

Solving for variable 'r'.

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

Add '15r' to each side of the equation.
31 + 15r = -27 + -15r + 15r

Combine like terms: -15r + 15r = 0
31 + 15r = -27 + 0
31 + 15r = -27

Add '-31' to each side of the equation.
31 + -31 + 15r = -27 + -31

Combine like terms: 31 + -31 = 0
0 + 15r = -27 + -31
15r = -27 + -31

Combine like terms: -27 + -31 = -58
15r = -58

Divide each side by '15'.
r = -3.866666667

Simplifying
r = -3.866666667

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