Question

3x-4y=7 and 5x+2y=3 solve by substitution method
& find the value of 7x+5y​

Answer 1

Answer:

it helps

Step-by-step explanation:

multiplying second equation by 2

then we get 10x+4y=6

solving first and second equation we get

13x=13

then the value of x is 1

substitute x value in first equation we get

y=-1

substitute x and y value in 7x+5y

7×1+5×-1

7-5

2