8+7+5r+2r=

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Solution for 8+7+5r+2r= equation:


Simplifying
8 + 7 + 5r + 2r = 0

Combine like terms: 8 + 7 = 15
15 + 5r + 2r = 0

Combine like terms: 5r + 2r = 7r
15 + 7r = 0

Solving
15 + 7r = 0

Solving for variable 'r'.

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

Add '-15' to each side of the equation.
15 + -15 + 7r = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 7r = 0 + -15
7r = 0 + -15

Combine like terms: 0 + -15 = -15
7r = -15

Divide each side by '7'.
r = -2.142857143

Simplifying
r = -2.142857143

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