Question

Q1 The solution of the given
simultaneous equation x-y = 7
x+y = 11. is.....​

Answer 1

Answer:

adding both equations

2x=18

x=9

y=11-9

y=2

Answer 2

Step-by-step explanation:

x-y=7

x=7+y

x+y=11

put the value of x=7+y

7+y+y=11

7+2y=11

2y=11-7

2y=4

y=4/2

y=2

x=7+y

x=7+2

x=9

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