7-(-4t)=4t-21t

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


Simplifying
7 + -1(-4t) = 4t + -21t

Remove parenthesis around (-4t)
7 + -1 * -4t = 4t + -21t

Multiply -1 * -4
7 + 4t = 4t + -21t

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

Solving
7 + 4t = -17t

Solving for variable 't'.

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

Add '17t' to each side of the equation.
7 + 4t + 17t = -17t + 17t

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

Combine like terms: -17t + 17t = 0
7 + 21t = 0

Add '-7' to each side of the equation.
7 + -7 + 21t = 0 + -7

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

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

Divide each side by '21'.
t = -0.3333333333

Simplifying
t = -0.3333333333

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