640=-80+120t

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Solution for 640=-80+120t equation:


Simplifying
640 = -80 + 120t

Solving
640 = -80 + 120t

Solving for variable 't'.

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

Add '-120t' to each side of the equation.
640 + -120t = -80 + 120t + -120t

Combine like terms: 120t + -120t = 0
640 + -120t = -80 + 0
640 + -120t = -80

Add '-640' to each side of the equation.
640 + -640 + -120t = -80 + -640

Combine like terms: 640 + -640 = 0
0 + -120t = -80 + -640
-120t = -80 + -640

Combine like terms: -80 + -640 = -720
-120t = -720

Divide each side by '-120'.
t = 6

Simplifying
t = 6

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