15-t+8r=-13

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Solution for 15-t+8r=-13 equation:


Simplifying
15 + -1t + 8r = -13

Reorder the terms:
15 + 8r + -1t = -13

Solving
15 + 8r + -1t = -13

Solving for variable 'r'.

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

Add '-15' to each side of the equation.
15 + 8r + -15 + -1t = -13 + -15

Reorder the terms:
15 + -15 + 8r + -1t = -13 + -15

Combine like terms: 15 + -15 = 0
0 + 8r + -1t = -13 + -15
8r + -1t = -13 + -15

Combine like terms: -13 + -15 = -28
8r + -1t = -28

Add 't' to each side of the equation.
8r + -1t + t = -28 + t

Combine like terms: -1t + t = 0
8r + 0 = -28 + t
8r = -28 + t

Divide each side by '8'.
r = -3.5 + 0.125t

Simplifying
r = -3.5 + 0.125t

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