-9(t-20)=4(t-15)

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Solution for -9(t-20)=4(t-15) equation: 


Simplifying
-9(t + -20) = 4(t + -15)

Reorder the terms:
-9(-20 + t) = 4(t + -15)
(-20 * -9 + t * -9) = 4(t + -15)
(180 + -9t) = 4(t + -15)

Reorder the terms:
180 + -9t = 4(-15 + t)
180 + -9t = (-15 * 4 + t * 4)
180 + -9t = (-60 + 4t)

Solving
180 + -9t = -60 + 4t

Solving for variable 't'.

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

Add '-4t' to each side of the equation.
180 + -9t + -4t = -60 + 4t + -4t

Combine like terms: -9t + -4t = -13t
180 + -13t = -60 + 4t + -4t

Combine like terms: 4t + -4t = 0
180 + -13t = -60 + 0
180 + -13t = -60

Add '-180' to each side of the equation.
180 + -180 + -13t = -60 + -180

Combine like terms: 180 + -180 = 0
0 + -13t = -60 + -180
-13t = -60 + -180

Combine like terms: -60 + -180 = -240
-13t = -240

Divide each side by '-13'.
t = 18.46153846

Simplifying
t = 18.46153846

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