Question

x-y=7, x+y=11 A please solve this eqn
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Answer 1

Step-by-step explanation:

2x = 18

x =9

put x in 1,

9 - y = 7

y =2

Answer 2

Answer:

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Step-by-step explanation:

x-y=7

X=7+y

Given,

x+y=11

7+y+y=11

2y=11-7

2y=4

y=2

So, that,

X=7+2

X=9