talbottmakinzip05906 talbottmakinzip05906

05-10-2018
Mathematics

contestada

Anyone know who to do this???

Anyone know who to do this class=

Respuesta :

cmoreno511 cmoreno511

08-10-2018

#10

X-y=3

X+y=5

______

2X=8

X= 8/2

X=4

Get one original equation substitute x to solve y

4+y=5

Y= -4+5

Y= 1

Or 4-y=3

-y= -4+3

-y= -1

Y= -1/-1

Y=1

To check just substitute into original equation

X-y=3

4-1=3

3=3

X+y=5

4+1=5

5=5

It checks

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