0.13(30.00+50.00)=r

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Solution for 0.13(30.00+50.00)=r equation: 


Simplifying
0.13(30.00 + 50.00) = r

Combine like terms: 30.00 + 50.00 = 80
0.13(80) = r

Multiply 0.13 * 80
10.4 = r

Solving
10.4 = 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.
10.4 + -1r = r + -1r

Combine like terms: r + -1r = 0
10.4 + -1r = 0

Add '-10.4' to each side of the equation.
10.4 + -10.4 + -1r = 0 + -10.4

Combine like terms: 10.4 + -10.4 = 0.0
0.0 + -1r = 0 + -10.4
-1r = 0 + -10.4

Combine like terms: 0 + -10.4 = -10.4
-1r = -10.4

Divide each side by '-1'.
r = 10.4

Simplifying
r = 10.4

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