15r-7r+2r-9r+r=16

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Solution for 15r-7r+2r-9r+r=16 equation: 


Simplifying
15r + -7r + 2r + -9r + r = 16

Combine like terms: 15r + -7r = 8r
8r + 2r + -9r + r = 16

Combine like terms: 8r + 2r = 10r
10r + -9r + r = 16

Combine like terms: 10r + -9r = 1r
1r + r = 16

Combine like terms: 1r + r = 2r
2r = 16

Solving
2r = 16

Solving for variable 'r'.

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

Divide each side by '2'.
r = 8

Simplifying
r = 8

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