80+r=160

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Solution for 80+r=160 equation: 


Simplifying
80 + r = 160

Solving
80 + r = 160

Solving for variable 'r'.

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

Add '-80' to each side of the equation.
80 + -80 + r = 160 + -80

Combine like terms: 80 + -80 = 0
0 + r = 160 + -80
r = 160 + -80

Combine like terms: 160 + -80 = 80
r = 80

Simplifying
r = 80

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