Question

2x+3y+5=0 ;3x-2y-12=0 solve this by subsitution method

Answer 1

Answer:

x=2 and y=-3

Step-by-step explanation:

2x+3y+5=0 ..........(1)

3x-2y-12=0...........(2)

3x-2y=12

3x=12+2y

x=12+2y/3

substitute x=12+2y/3 in equation (1)

2(12+2y/3)+3y= -5

24+4y/3 +3y. =-5

24+4y+9y/3. =-5

24+13y/3. =-5

24+13y. =-5*3

13y. =-15-24

y = -39/13

y=-3

Now,

substitute y=-3 in (2)

3x-2(-3)=12

3x+6. =12

3x. =12-6

x=6/3

x=2