15t-3(t-7)=57

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Solution for 15t-3(t-7)=57 equation:


Simplifying
15t + -3(t + -7) = 57

Reorder the terms:
15t + -3(-7 + t) = 57
15t + (-7 * -3 + t * -3) = 57
15t + (21 + -3t) = 57

Reorder the terms:
21 + 15t + -3t = 57

Combine like terms: 15t + -3t = 12t
21 + 12t = 57

Solving
21 + 12t = 57

Solving for variable 't'.

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

Add '-21' to each side of the equation.
21 + -21 + 12t = 57 + -21

Combine like terms: 21 + -21 = 0
0 + 12t = 57 + -21
12t = 57 + -21

Combine like terms: 57 + -21 = 36
12t = 36

Divide each side by '12'.
t = 3

Simplifying
t = 3

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