3[t+7]=15

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Solution for 3[t+7]=15 equation: 


Simplifying
3[t + 7] = 15

Reorder the terms:
3[7 + t] = 15
[7 * 3 + t * 3] = 15
[21 + 3t] = 15

Solving
21 + 3t = 15

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 + 3t = 15 + -21

Combine like terms: 21 + -21 = 0
0 + 3t = 15 + -21
3t = 15 + -21

Combine like terms: 15 + -21 = -6
3t = -6

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

Simplifying
t = -2

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