(3*t)+s=90

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Solution for (3*t)+s=90 equation: 


Simplifying
(3t) + s = 90

Reorder the terms:
s + (3t) = 90

Solving
s + (3t) = 90

Solving for variable 's'.

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

Add '(-3t)' to each side of the equation.
s + (3t) + (-3t) = 90 + (-3t)

Combine like terms: (3t) + (-3t) = 0
s + 0 = 90 + (-3t)
s = 90 + (-3t)

Simplifying
s = 90 + (-3t)

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