-9(t-9)-(t+4)=11

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Solution for -9(t-9)-(t+4)=11 equation: 


Simplifying
-9(t + -9) + -1(t + 4) = 11

Reorder the terms:
-9(-9 + t) + -1(t + 4) = 11
(-9 * -9 + t * -9) + -1(t + 4) = 11
(81 + -9t) + -1(t + 4) = 11

Reorder the terms:
81 + -9t + -1(4 + t) = 11
81 + -9t + (4 * -1 + t * -1) = 11
81 + -9t + (-4 + -1t) = 11

Reorder the terms:
81 + -4 + -9t + -1t = 11

Combine like terms: 81 + -4 = 77
77 + -9t + -1t = 11

Combine like terms: -9t + -1t = -10t
77 + -10t = 11

Solving
77 + -10t = 11

Solving for variable 't'.

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

Add '-77' to each side of the equation.
77 + -77 + -10t = 11 + -77

Combine like terms: 77 + -77 = 0
0 + -10t = 11 + -77
-10t = 11 + -77

Combine like terms: 11 + -77 = -66
-10t = -66

Divide each side by '-10'.
t = 6.6

Simplifying
t = 6.6

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