9(10-t)=-t

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Solution for 9(10-t)=-t equation:


Simplifying
9(10 + -1t) = -1t
(10 * 9 + -1t * 9) = -1t
(90 + -9t) = -1t

Solving
90 + -9t = -1t

Solving for variable 't'.

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

Add 't' to each side of the equation.
90 + -9t + t = -1t + t

Combine like terms: -9t + t = -8t
90 + -8t = -1t + t

Combine like terms: -1t + t = 0
90 + -8t = 0

Add '-90' to each side of the equation.
90 + -90 + -8t = 0 + -90

Combine like terms: 90 + -90 = 0
0 + -8t = 0 + -90
-8t = 0 + -90

Combine like terms: 0 + -90 = -90
-8t = -90

Divide each side by '-8'.
t = 11.25

Simplifying
t = 11.25

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