16=-1-3r+8

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Solution for 16=-1-3r+8 equation:


Simplifying
16 = -1 + -3r + 8

Reorder the terms:
16 = -1 + 8 + -3r

Combine like terms: -1 + 8 = 7
16 = 7 + -3r

Solving
16 = 7 + -3r

Solving for variable 'r'.

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

Add '3r' to each side of the equation.
16 + 3r = 7 + -3r + 3r

Combine like terms: -3r + 3r = 0
16 + 3r = 7 + 0
16 + 3r = 7

Add '-16' to each side of the equation.
16 + -16 + 3r = 7 + -16

Combine like terms: 16 + -16 = 0
0 + 3r = 7 + -16
3r = 7 + -16

Combine like terms: 7 + -16 = -9
3r = -9

Divide each side by '3'.
r = -3

Simplifying
r = -3

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