8(r+15)+7(2r+10)=

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Solution for 8(r+15)+7(2r+10)= equation:


Simplifying
8(r + 15) + 7(2r + 10) = 0

Reorder the terms:
8(15 + r) + 7(2r + 10) = 0
(15 * 8 + r * 8) + 7(2r + 10) = 0
(120 + 8r) + 7(2r + 10) = 0

Reorder the terms:
120 + 8r + 7(10 + 2r) = 0
120 + 8r + (10 * 7 + 2r * 7) = 0
120 + 8r + (70 + 14r) = 0

Reorder the terms:
120 + 70 + 8r + 14r = 0

Combine like terms: 120 + 70 = 190
190 + 8r + 14r = 0

Combine like terms: 8r + 14r = 22r
190 + 22r = 0

Solving
190 + 22r = 0

Solving for variable 'r'.

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

Add '-190' to each side of the equation.
190 + -190 + 22r = 0 + -190

Combine like terms: 190 + -190 = 0
0 + 22r = 0 + -190
22r = 0 + -190

Combine like terms: 0 + -190 = -190
22r = -190

Divide each side by '22'.
r = -8.636363636

Simplifying
r = -8.636363636

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