1.5=15-r

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Solution for 1.5=15-r equation: 


Simplifying
1.5 = 15 + -1r

Solving
1.5 = 15 + -1r

Solving for variable 'r'.

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

Add 'r' to each side of the equation.
1.5 + r = 15 + -1r + r

Combine like terms: -1r + r = 0
1.5 + r = 15 + 0
1.5 + r = 15

Add '-1.5' to each side of the equation.
1.5 + -1.5 + r = 15 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + r = 15 + -1.5
r = 15 + -1.5

Combine like terms: 15 + -1.5 = 13.5
r = 13.5

Simplifying
r = 13.5

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