maggiemadrid27 maggiemadrid27

30-10-2017
Mathematics

contestada

x-7=11 , 2x+y=19 when using elimination

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adelinekcrace adelinekcrace

30-10-2017

x+0=18
2x+y=19

(-2)x+(-2)0=(-2)18
2x+y=19

0+y= -17
2x+ (-17)=19
2x=36

y=-17
x=18

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