1.

3х – 4y = 7 5x +2y = 3 find the value of 7x+ 5y.​

Answer»

ANSWER:

x=1 & y=-1

7x+5y=2

Step-by-step explanation:

3x-4y=7

5x+2y=3-------×2

3x-4y=7

10x+4y=6.

On adding

13x=13

x=1

Putting value in equation

3(1)-4y=7

3-4y=7

-4y=4

y=-1

Now, Value of 7x+5y=7(1)+5(-1)

7-5=2



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