t-(-7)=-21

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


Simplifying
t + -1(-7) = -21

Multiply -1 * -7
t + 7 = -21

Reorder the terms:
7 + t = -21

Solving
7 + t = -21

Solving for variable 't'.

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

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

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

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

Simplifying
t = -28

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