-10=r(-15)

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Solution for -10=r(-15) equation:


Simplifying
-10 = r(-15)

Reorder the terms for easier multiplication:
-10 = -15r

Solving
-10 = -15r

Solving for variable 'r'.

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

Add '15r' to each side of the equation.
-10 + 15r = -15r + 15r

Combine like terms: -15r + 15r = 0
-10 + 15r = 0

Add '10' to each side of the equation.
-10 + 10 + 15r = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 15r = 0 + 10
15r = 0 + 10

Combine like terms: 0 + 10 = 10
15r = 10

Divide each side by '15'.
r = 0.6666666667

Simplifying
r = 0.6666666667

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