9-3r=-5(5r+7)

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Solution for 9-3r=-5(5r+7) equation:


Simplifying
9 + -3r = -5(5r + 7)

Reorder the terms:
9 + -3r = -5(7 + 5r)
9 + -3r = (7 * -5 + 5r * -5)
9 + -3r = (-35 + -25r)

Solving
9 + -3r = -35 + -25r

Solving for variable 'r'.

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

Add '25r' to each side of the equation.
9 + -3r + 25r = -35 + -25r + 25r

Combine like terms: -3r + 25r = 22r
9 + 22r = -35 + -25r + 25r

Combine like terms: -25r + 25r = 0
9 + 22r = -35 + 0
9 + 22r = -35

Add '-9' to each side of the equation.
9 + -9 + 22r = -35 + -9

Combine like terms: 9 + -9 = 0
0 + 22r = -35 + -9
22r = -35 + -9

Combine like terms: -35 + -9 = -44
22r = -44

Divide each side by '22'.
r = -2

Simplifying
r = -2

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