-15=3(t-7)-t

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Solution for -15=3(t-7)-t equation:


Simplifying
-15 = 3(t + -7) + -1t

Reorder the terms:
-15 = 3(-7 + t) + -1t
-15 = (-7 * 3 + t * 3) + -1t
-15 = (-21 + 3t) + -1t

Combine like terms: 3t + -1t = 2t
-15 = -21 + 2t

Solving
-15 = -21 + 2t

Solving for variable 't'.

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

Add '-2t' to each side of the equation.
-15 + -2t = -21 + 2t + -2t

Combine like terms: 2t + -2t = 0
-15 + -2t = -21 + 0
-15 + -2t = -21

Add '15' to each side of the equation.
-15 + 15 + -2t = -21 + 15

Combine like terms: -15 + 15 = 0
0 + -2t = -21 + 15
-2t = -21 + 15

Combine like terms: -21 + 15 = -6
-2t = -6

Divide each side by '-2'.
t = 3

Simplifying
t = 3

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