-122=-4(3r+5)-5r

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Solution for -122=-4(3r+5)-5r equation:


Simplifying
-122 = -4(3r + 5) + -5r

Reorder the terms:
-122 = -4(5 + 3r) + -5r
-122 = (5 * -4 + 3r * -4) + -5r
-122 = (-20 + -12r) + -5r

Combine like terms: -12r + -5r = -17r
-122 = -20 + -17r

Solving
-122 = -20 + -17r

Solving for variable 'r'.

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

Add '17r' to each side of the equation.
-122 + 17r = -20 + -17r + 17r

Combine like terms: -17r + 17r = 0
-122 + 17r = -20 + 0
-122 + 17r = -20

Add '122' to each side of the equation.
-122 + 122 + 17r = -20 + 122

Combine like terms: -122 + 122 = 0
0 + 17r = -20 + 122
17r = -20 + 122

Combine like terms: -20 + 122 = 102
17r = 102

Divide each side by '17'.
r = 6

Simplifying
r = 6

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