8(r-9)-5(r-5)=-32

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Solution for 8(r-9)-5(r-5)=-32 equation:


Simplifying
8(r + -9) + -5(r + -5) = -32

Reorder the terms:
8(-9 + r) + -5(r + -5) = -32
(-9 * 8 + r * 8) + -5(r + -5) = -32
(-72 + 8r) + -5(r + -5) = -32

Reorder the terms:
-72 + 8r + -5(-5 + r) = -32
-72 + 8r + (-5 * -5 + r * -5) = -32
-72 + 8r + (25 + -5r) = -32

Reorder the terms:
-72 + 25 + 8r + -5r = -32

Combine like terms: -72 + 25 = -47
-47 + 8r + -5r = -32

Combine like terms: 8r + -5r = 3r
-47 + 3r = -32

Solving
-47 + 3r = -32

Solving for variable 'r'.

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

Add '47' to each side of the equation.
-47 + 47 + 3r = -32 + 47

Combine like terms: -47 + 47 = 0
0 + 3r = -32 + 47
3r = -32 + 47

Combine like terms: -32 + 47 = 15
3r = 15

Divide each side by '3'.
r = 5

Simplifying
r = 5

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