7t-21+t+4=15

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Solution for 7t-21+t+4=15 equation:


Simplifying
7t + -21 + t + 4 = 15

Reorder the terms:
-21 + 4 + 7t + t = 15

Combine like terms: -21 + 4 = -17
-17 + 7t + t = 15

Combine like terms: 7t + t = 8t
-17 + 8t = 15

Solving
-17 + 8t = 15

Solving for variable 't'.

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

Add '17' to each side of the equation.
-17 + 17 + 8t = 15 + 17

Combine like terms: -17 + 17 = 0
0 + 8t = 15 + 17
8t = 15 + 17

Combine like terms: 15 + 17 = 32
8t = 32

Divide each side by '8'.
t = 4

Simplifying
t = 4

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