studentx1 studentx1

02-02-2017
Mathematics

contestada

-7x+y=-19
-2x+3y=-19

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httplyiah httplyiah

02-02-2017

-7-2=-9
y+3y=4y

-9x+4y=-19

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Melodyzz Melodyzz

02-02-2017

y=7x-19

-2x+3(7x-19)=-19
-2x+21x-57=-19
19x-57=-19
19x=38
x=2

-7(2) + y = -19
-14 + y = -19
y=-5

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