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Mathematics, 06.05.2020 21:08 zingchristina

Malik solved this system of equations. 2 x + 4 y = 24. 5 x + y = 15. As the first step, he decided to solve for x in the first equation because it has a small, even number for the coefficient. Jill told him there was a more efficient way. What reason can Jill give for her statement? The variable y in the second equation has a coefficient of one so there will be fewer steps to the solution. The variable x in the second equation has a coefficient of 5 so it will be easy to divide 15 by 5. The variable y in the first equation is divisible by 2 so it will be the most efficient way to start. The variable y in the first equation has a larger even number. When dividing by 4, the solution will be a smaller number.

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Malik solved this system of equations. 2 x + 4 y = 24. 5 x + y = 15. As the first step, he decided t...
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