Question

3x+2y=-11; 7x-4y=9 solve by simultaneous equation​

Answer 1

Answer:

x=31/13,y=25/13

Step-by-step explanation:

3x+2y=11

7x-4y=9

the math is solve by the equation of aponoyon

Answer 2

Answer:

multiple first equation by 2

you will get

6x+ 4y= -22------(1)

7x-4y=9-------(2)

add both the equation

you will get

13x=-13

x= -1

put x= -1 in equation (2)

7(-1)-4y=9

-7-4y=9

-4y=16

y=-4

[x=-1,,,,y=-4]