90=20(t)+40

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Solution for 90=20(t)+40 equation:


Simplifying
90 = 20(t) + 40

Reorder the terms:
90 = 40 + 20t

Solving
90 = 40 + 20t

Solving for variable 't'.

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

Add '-20t' to each side of the equation.
90 + -20t = 40 + 20t + -20t

Combine like terms: 20t + -20t = 0
90 + -20t = 40 + 0
90 + -20t = 40

Add '-90' to each side of the equation.
90 + -90 + -20t = 40 + -90

Combine like terms: 90 + -90 = 0
0 + -20t = 40 + -90
-20t = 40 + -90

Combine like terms: 40 + -90 = -50
-20t = -50

Divide each side by '-20'.
t = 2.5

Simplifying
t = 2.5

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