3(5+4r)=-18r

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Solution for 3(5+4r)=-18r equation:


Simplifying
3(5 + 4r) = -18r
(5 * 3 + 4r * 3) = -18r
(15 + 12r) = -18r

Solving
15 + 12r = -18r

Solving for variable 'r'.

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

Add '18r' to each side of the equation.
15 + 12r + 18r = -18r + 18r

Combine like terms: 12r + 18r = 30r
15 + 30r = -18r + 18r

Combine like terms: -18r + 18r = 0
15 + 30r = 0

Add '-15' to each side of the equation.
15 + -15 + 30r = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 30r = 0 + -15
30r = 0 + -15

Combine like terms: 0 + -15 = -15
30r = -15

Divide each side by '30'.
r = -0.5

Simplifying
r = -0.5

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