(t-3)7=6+21

Solution for (t-3)7=6+21 equation:

Simplifying
(t + -3) * 7 = 6 + 21

Reorder the terms:
(-3 + t) * 7 = 6 + 21

Reorder the terms for easier multiplication:
7(-3 + t) = 6 + 21
(-3 * 7 + t * 7) = 6 + 21
(-21 + 7t) = 6 + 21

Combine like terms: 6 + 21 = 27
-21 + 7t = 27

Solving
-21 + 7t = 27

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 + 7t = 27 + 21

Combine like terms: -21 + 21 = 0
0 + 7t = 27 + 21
7t = 27 + 21

Combine like terms: 27 + 21 = 48
7t = 48

Divide each side by '7'.
t = 6.857142857

Simplifying
t = 6.857142857