90=7t-17t

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Solution for 90=7t-17t equation:


Simplifying
90 = 7t + -17t

Combine like terms: 7t + -17t = -10t
90 = -10t

Solving
90 = -10t

Solving for variable 't'.

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

Add '10t' to each side of the equation.
90 + 10t = -10t + 10t

Combine like terms: -10t + 10t = 0
90 + 10t = 0

Add '-90' to each side of the equation.
90 + -90 + 10t = 0 + -90

Combine like terms: 90 + -90 = 0
0 + 10t = 0 + -90
10t = 0 + -90

Combine like terms: 0 + -90 = -90
10t = -90

Divide each side by '10'.
t = -9

Simplifying
t = -9

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