7r-4r=16+r

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Solution for 7r-4r=16+r equation: 


Simplifying
7r + -4r = 16 + r

Combine like terms: 7r + -4r = 3r
3r = 16 + r

Solving
3r = 16 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
3r + -1r = 16 + r + -1r

Combine like terms: 3r + -1r = 2r
2r = 16 + r + -1r

Combine like terms: r + -1r = 0
2r = 16 + 0
2r = 16

Divide each side by '2'.
r = 8

Simplifying
r = 8

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