7(t-4)-t=20

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Solution for 7(t-4)-t=20 equation:


Simplifying
7(t + -4) + -1t = 20

Reorder the terms:
7(-4 + t) + -1t = 20
(-4 * 7 + t * 7) + -1t = 20
(-28 + 7t) + -1t = 20

Combine like terms: 7t + -1t = 6t
-28 + 6t = 20

Solving
-28 + 6t = 20

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 + 6t = 20 + 28

Combine like terms: -28 + 28 = 0
0 + 6t = 20 + 28
6t = 20 + 28

Combine like terms: 20 + 28 = 48
6t = 48

Divide each side by '6'.
t = 8

Simplifying
t = 8

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