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17-12-2020
Mathematics

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y = -2x + 9

5x - 2y = 18

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yeahh8599 yeahh8599

17-12-2020

(0,-9)

Step-by-step explanation:

y=-2x+9

5x-2y=18

so then

5x-2y=18

-2x-y=9

how get rid of the y by multiplying the second equation by -2

5x=18

4x=-18

now add

9x=0

x=0

now for y you substitute the x in for one of the equations

5x-2y=18

-2x=18

x=-9

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