Tyrone went to a basketball game and bought a jersey that was on sale at a 30% discount. He also bought a hat that cost $37.89. Tyrone spent a total of $83.39. Write an equation to find the original cost of the jersey.

both equations and proportions are better.

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step-by-step explanation:

answer: i don't understand it

step-by-step explanation: sorry

if you was gonna solve for a, a is a   < -12