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22-01-2020
Mathematics

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x+y=7
x-y=3
2x-3y=15
3x-2y=10

Respuesta :

mp1784777 mp1784777

22-01-2020

Step-by-step explanation:

x+y=7 _ eqn1

x-y=3_ eqn2

add eqn1 and eqn2

x+y=7

+ x-y=3

= 2x= 10

x=5

x+y=7

5+y=7

y=7-5

y=2 proved

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