The track team is trying to reduce their time for a relay race. first they reduce their time by 2.4 minutes. then they are able to reduce that time by 18. if their final time is 3.15 minutes, what was their beginning time?

use substitution to solve each system of equations. y = x + 5 3x + y = 25 62/87,21 y = x + 5 3x + y = 25 substitute x + 5 for y in the second equation. substitute the solution for x into either equation to find y. the solution is (5, 10)

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the equivalent expression are always the hardest ones but you look at the gcf also

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