81=(t-(-4))+11

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Solution for 81=(t-(-4))+11 equation:


Simplifying
81 = (t + -1(-4)) + 11

Multiply -1 * -4
81 = (t + 4) + 11

Reorder the terms:
81 = (4 + t) + 11

Remove parenthesis around (4 + t)
81 = 4 + t + 11

Reorder the terms:
81 = 4 + 11 + t

Combine like terms: 4 + 11 = 15
81 = 15 + t

Solving
81 = 15 + t

Solving for variable 't'.

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

Add '-1t' to each side of the equation.
81 + -1t = 15 + t + -1t

Combine like terms: t + -1t = 0
81 + -1t = 15 + 0
81 + -1t = 15

Add '-81' to each side of the equation.
81 + -81 + -1t = 15 + -81

Combine like terms: 81 + -81 = 0
0 + -1t = 15 + -81
-1t = 15 + -81

Combine like terms: 15 + -81 = -66
-1t = -66

Divide each side by '-1'.
t = 66

Simplifying
t = 66

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