Question

please give me the answer by substitution method​

Answer 1

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Answer 2

Step-by-step explanation:

3x+4y=10 ....1

x-y=1 ....2

let us take eq 2, we get

x=1+y ......3

Now, substitute this value of x in eq. 1

3(1+y)+4y=10

3+3y+4y=10

3+7y=10

7y= 10-3

7y=7

y=1

Now, put this value of y in eq 3

x=1+1

x=2

Therefore, x=2,y=1

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