-3(5r+10)=40

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Solution for -3(5r+10)=40 equation: 


Simplifying
-3(5r + 10) = 40

Reorder the terms:
-3(10 + 5r) = 40
(10 * -3 + 5r * -3) = 40
(-30 + -15r) = 40

Solving
-30 + -15r = 40

Solving for variable 'r'.

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

Add '30' to each side of the equation.
-30 + 30 + -15r = 40 + 30

Combine like terms: -30 + 30 = 0
0 + -15r = 40 + 30
-15r = 40 + 30

Combine like terms: 40 + 30 = 70
-15r = 70

Divide each side by '-15'.
r = -4.666666667

Simplifying
r = -4.666666667

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