3(2r+5)=5(r-7)

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Solution for 3(2r+5)=5(r-7) equation:


Simplifying
3(2r + 5) = 5(r + -7)

Reorder the terms:
3(5 + 2r) = 5(r + -7)
(5 * 3 + 2r * 3) = 5(r + -7)
(15 + 6r) = 5(r + -7)

Reorder the terms:
15 + 6r = 5(-7 + r)
15 + 6r = (-7 * 5 + r * 5)
15 + 6r = (-35 + 5r)

Solving
15 + 6r = -35 + 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
15 + 6r + -5r = -35 + 5r + -5r

Combine like terms: 6r + -5r = 1r
15 + 1r = -35 + 5r + -5r

Combine like terms: 5r + -5r = 0
15 + 1r = -35 + 0
15 + 1r = -35

Add '-15' to each side of the equation.
15 + -15 + 1r = -35 + -15

Combine like terms: 15 + -15 = 0
0 + 1r = -35 + -15
1r = -35 + -15

Combine like terms: -35 + -15 = -50
1r = -50

Divide each side by '1'.
r = -50

Simplifying
r = -50

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