Question

1] 8x+7y
x=4 y=1 find the value of the following​

Answer 1

Answer:

Correct option is

C

x+y=7,x−y=1

Rewriting the given equations, we get

8x−7y=11 ...(i)

7x−8y=4 ...(ii)

On adding (i) and (ii) , we get

15x−15y=15

⇒x−y=1

On subtracting (ii) from (i), we get

x+y=7

Step-by-step explanation:

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Answer 2

✤Qᴜᴇꜱᴛɪᴏɴ :-

⠀

1) 8x + 7y

✤ꜱᴏʟᴜᴛɪᴏɴ :-

⠀put the value , x = 4, y = 1

8 × 4 + 7 × 1

➡️ 32+7

➡️ 39