0.3(r-1)=15

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Solution for 0.3(r-1)=15 equation: 


Simplifying
0.3(r + -1) = 15

Reorder the terms:
0.3(-1 + r) = 15
(-1 * 0.3 + r * 0.3) = 15
(-0.3 + 0.3r) = 15

Solving
-0.3 + 0.3r = 15

Solving for variable 'r'.

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

Add '0.3' to each side of the equation.
-0.3 + 0.3 + 0.3r = 15 + 0.3

Combine like terms: -0.3 + 0.3 = 0.0
0.0 + 0.3r = 15 + 0.3
0.3r = 15 + 0.3

Combine like terms: 15 + 0.3 = 15.3
0.3r = 15.3

Divide each side by '0.3'.
r = 51

Simplifying
r = 51

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