-3=5(r+3)

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Solution for -3=5(r+3) equation:


Simplifying
-3 = 5(r + 3)

Reorder the terms:
-3 = 5(3 + r)
-3 = (3 * 5 + r * 5)
-3 = (15 + 5r)

Solving
-3 = 15 + 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
-3 + -5r = 15 + 5r + -5r

Combine like terms: 5r + -5r = 0
-3 + -5r = 15 + 0
-3 + -5r = 15

Add '3' to each side of the equation.
-3 + 3 + -5r = 15 + 3

Combine like terms: -3 + 3 = 0
0 + -5r = 15 + 3
-5r = 15 + 3

Combine like terms: 15 + 3 = 18
-5r = 18

Divide each side by '-5'.
r = -3.6

Simplifying
r = -3.6

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