-3(-8+5r)=40-7r

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Solution for -3(-8+5r)=40-7r equation:


Simplifying
-3(-8 + 5r) = 40 + -7r
(-8 * -3 + 5r * -3) = 40 + -7r
(24 + -15r) = 40 + -7r

Solving
24 + -15r = 40 + -7r

Solving for variable 'r'.

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

Add '7r' to each side of the equation.
24 + -15r + 7r = 40 + -7r + 7r

Combine like terms: -15r + 7r = -8r
24 + -8r = 40 + -7r + 7r

Combine like terms: -7r + 7r = 0
24 + -8r = 40 + 0
24 + -8r = 40

Add '-24' to each side of the equation.
24 + -24 + -8r = 40 + -24

Combine like terms: 24 + -24 = 0
0 + -8r = 40 + -24
-8r = 40 + -24

Combine like terms: 40 + -24 = 16
-8r = 16

Divide each side by '-8'.
r = -2

Simplifying
r = -2

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