8(r-9)=5(r+5)

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Solution for 8(r-9)=5(r+5) equation:


Simplifying
8(r + -9) = 5(r + 5)

Reorder the terms:
8(-9 + r) = 5(r + 5)
(-9 * 8 + r * 8) = 5(r + 5)
(-72 + 8r) = 5(r + 5)

Reorder the terms:
-72 + 8r = 5(5 + r)
-72 + 8r = (5 * 5 + r * 5)
-72 + 8r = (25 + 5r)

Solving
-72 + 8r = 25 + 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.
-72 + 8r + -5r = 25 + 5r + -5r

Combine like terms: 8r + -5r = 3r
-72 + 3r = 25 + 5r + -5r

Combine like terms: 5r + -5r = 0
-72 + 3r = 25 + 0
-72 + 3r = 25

Add '72' to each side of the equation.
-72 + 72 + 3r = 25 + 72

Combine like terms: -72 + 72 = 0
0 + 3r = 25 + 72
3r = 25 + 72

Combine like terms: 25 + 72 = 97
3r = 97

Divide each side by '3'.
r = 32.33333333

Simplifying
r = 32.33333333

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