-4r-5(4r-7)=131

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Solution for -4r-5(4r-7)=131 equation:


Simplifying
-4r + -5(4r + -7) = 131

Reorder the terms:
-4r + -5(-7 + 4r) = 131
-4r + (-7 * -5 + 4r * -5) = 131
-4r + (35 + -20r) = 131

Reorder the terms:
35 + -4r + -20r = 131

Combine like terms: -4r + -20r = -24r
35 + -24r = 131

Solving
35 + -24r = 131

Solving for variable 'r'.

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

Add '-35' to each side of the equation.
35 + -35 + -24r = 131 + -35

Combine like terms: 35 + -35 = 0
0 + -24r = 131 + -35
-24r = 131 + -35

Combine like terms: 131 + -35 = 96
-24r = 96

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

Simplifying
r = -4

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