30=-2t+90

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Solution for 30=-2t+90 equation:


Simplifying
30 = -2t + 90

Reorder the terms:
30 = 90 + -2t

Solving
30 = 90 + -2t

Solving for variable 't'.

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

Add '2t' to each side of the equation.
30 + 2t = 90 + -2t + 2t

Combine like terms: -2t + 2t = 0
30 + 2t = 90 + 0
30 + 2t = 90

Add '-30' to each side of the equation.
30 + -30 + 2t = 90 + -30

Combine like terms: 30 + -30 = 0
0 + 2t = 90 + -30
2t = 90 + -30

Combine like terms: 90 + -30 = 60
2t = 60

Divide each side by '2'.
t = 30

Simplifying
t = 30

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