-9(r-2)=4(t-15)

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Solution for -9(r-2)=4(t-15) equation: 


Simplifying
-9(r + -2) = 4(t + -15)

Reorder the terms:
-9(-2 + r) = 4(t + -15)
(-2 * -9 + r * -9) = 4(t + -15)
(18 + -9r) = 4(t + -15)

Reorder the terms:
18 + -9r = 4(-15 + t)
18 + -9r = (-15 * 4 + t * 4)
18 + -9r = (-60 + 4t)

Solving
18 + -9r = -60 + 4t

Solving for variable 'r'.

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

Add '-18' to each side of the equation.
18 + -18 + -9r = -60 + -18 + 4t

Combine like terms: 18 + -18 = 0
0 + -9r = -60 + -18 + 4t
-9r = -60 + -18 + 4t

Combine like terms: -60 + -18 = -78
-9r = -78 + 4t

Divide each side by '-9'.
r = 8.666666667 + -0.4444444444t

Simplifying
r = 8.666666667 + -0.4444444444t

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