-8(t-9)-(t+4)=7

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Solution for -8(t-9)-(t+4)=7 equation: 


Simplifying
-8(t + -9) + -1(t + 4) = 7

Reorder the terms:
-8(-9 + t) + -1(t + 4) = 7
(-9 * -8 + t * -8) + -1(t + 4) = 7
(72 + -8t) + -1(t + 4) = 7

Reorder the terms:
72 + -8t + -1(4 + t) = 7
72 + -8t + (4 * -1 + t * -1) = 7
72 + -8t + (-4 + -1t) = 7

Reorder the terms:
72 + -4 + -8t + -1t = 7

Combine like terms: 72 + -4 = 68
68 + -8t + -1t = 7

Combine like terms: -8t + -1t = -9t
68 + -9t = 7

Solving
68 + -9t = 7

Solving for variable 't'.

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

Add '-68' to each side of the equation.
68 + -68 + -9t = 7 + -68

Combine like terms: 68 + -68 = 0
0 + -9t = 7 + -68
-9t = 7 + -68

Combine like terms: 7 + -68 = -61
-9t = -61

Divide each side by '-9'.
t = 6.777777778

Simplifying
t = 6.777777778

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