r-9-(-16)=-83

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Solution for r-9-(-16)=-83 equation: 


Simplifying
r + -9 + -1(-16) = -83

Multiply -1 * -16
r + -9 + 16 = -83

Reorder the terms:
-9 + 16 + r = -83

Combine like terms: -9 + 16 = 7
7 + r = -83

Solving
7 + r = -83

Solving for variable 'r'.

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

Add '-7' to each side of the equation.
7 + -7 + r = -83 + -7

Combine like terms: 7 + -7 = 0
0 + r = -83 + -7
r = -83 + -7

Combine like terms: -83 + -7 = -90
r = -90

Simplifying
r = -90

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