-8(5r+17)+7r=3+4-20r

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Solution for -8(5r+17)+7r=3+4-20r equation: 


Simplifying
-8(5r + 17) + 7r = 3 + 4 + -20r

Reorder the terms:
-8(17 + 5r) + 7r = 3 + 4 + -20r
(17 * -8 + 5r * -8) + 7r = 3 + 4 + -20r
(-136 + -40r) + 7r = 3 + 4 + -20r

Combine like terms: -40r + 7r = -33r
-136 + -33r = 3 + 4 + -20r

Combine like terms: 3 + 4 = 7
-136 + -33r = 7 + -20r

Solving
-136 + -33r = 7 + -20r

Solving for variable 'r'.

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

Add '20r' to each side of the equation.
-136 + -33r + 20r = 7 + -20r + 20r

Combine like terms: -33r + 20r = -13r
-136 + -13r = 7 + -20r + 20r

Combine like terms: -20r + 20r = 0
-136 + -13r = 7 + 0
-136 + -13r = 7

Add '136' to each side of the equation.
-136 + 136 + -13r = 7 + 136

Combine like terms: -136 + 136 = 0
0 + -13r = 7 + 136
-13r = 7 + 136

Combine like terms: 7 + 136 = 143
-13r = 143

Divide each side by '-13'.
r = -11

Simplifying
r = -11

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