-21+5+-9=3(t-4)-5

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Solution for -21+5+-9=3(t-4)-5 equation:


Simplifying
-21 + 5 + -9 = 3(t + -4) + -5

Combine like terms: -21 + 5 = -16
-16 + -9 = 3(t + -4) + -5

Combine like terms: -16 + -9 = -25
-25 = 3(t + -4) + -5

Reorder the terms:
-25 = 3(-4 + t) + -5
-25 = (-4 * 3 + t * 3) + -5
-25 = (-12 + 3t) + -5

Reorder the terms:
-25 = -12 + -5 + 3t

Combine like terms: -12 + -5 = -17
-25 = -17 + 3t

Solving
-25 = -17 + 3t

Solving for variable 't'.

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

Add '-3t' to each side of the equation.
-25 + -3t = -17 + 3t + -3t

Combine like terms: 3t + -3t = 0
-25 + -3t = -17 + 0
-25 + -3t = -17

Add '25' to each side of the equation.
-25 + 25 + -3t = -17 + 25

Combine like terms: -25 + 25 = 0
0 + -3t = -17 + 25
-3t = -17 + 25

Combine like terms: -17 + 25 = 8
-3t = 8

Divide each side by '-3'.
t = -2.666666667

Simplifying
t = -2.666666667

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