-7(t+4)=21

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Solution for -7(t+4)=21 equation:


Simplifying
-7(t + 4) = 21

Reorder the terms:
-7(4 + t) = 21
(4 * -7 + t * -7) = 21
(-28 + -7t) = 21

Solving
-28 + -7t = 21

Solving for variable 't'.

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

Add '28' to each side of the equation.
-28 + 28 + -7t = 21 + 28

Combine like terms: -28 + 28 = 0
0 + -7t = 21 + 28
-7t = 21 + 28

Combine like terms: 21 + 28 = 49
-7t = 49

Divide each side by '-7'.
t = -7

Simplifying
t = -7

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