1.3+0.5r=3.80

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Solution for 1.3+0.5r=3.80 equation: 


Simplifying
1.3 + 0.5r = 3.80

Solving
1.3 + 0.5r = 3.80

Solving for variable 'r'.

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

Add '-1.3' to each side of the equation.
1.3 + -1.3 + 0.5r = 3.80 + -1.3

Combine like terms: 1.3 + -1.3 = 0.0
0.0 + 0.5r = 3.80 + -1.3
0.5r = 3.80 + -1.3

Combine like terms: 3.80 + -1.3 = 2.5
0.5r = 2.5

Divide each side by '0.5'.
r = 5

Simplifying
r = 5

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