kristinao6231 kristinao6231

13-12-2018
Mathematics

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What is the solution to the system of equations? Use the substitution meathod to solve. 6=-4x+y and -5x-y=21

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ChiWaWa ChiWaWa

13-12-2018

6+4x=y or y=4x+6

Plug in to second equation: -5x-(4x+6)=21

-9x-6=21

-9x=27

x=-3

Plugging in, you get that y=-12+6 or -6.

Therefore, the solution is (-3,-6)

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