5-9r-8=-66

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Solution for 5-9r-8=-66 equation:


Simplifying
5 + -9r + -8 = -66

Reorder the terms:
5 + -8 + -9r = -66

Combine like terms: 5 + -8 = -3
-3 + -9r = -66

Solving
-3 + -9r = -66

Solving for variable 'r'.

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

Add '3' to each side of the equation.
-3 + 3 + -9r = -66 + 3

Combine like terms: -3 + 3 = 0
0 + -9r = -66 + 3
-9r = -66 + 3

Combine like terms: -66 + 3 = -63
-9r = -63

Divide each side by '-9'.
r = 7

Simplifying
r = 7

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