Question

If x=7-44/5, then find the value of 15-100-10​

Answer 1

Answer:

Step-by-step explanation:

2x + 3y = 11  

2x - 4y = -24

solving these equations by substitution method,  

Now, from (ii), we get,  

2x-4y=-24

2x=-24+4y

x=(-24+4y)/2

x=-24/2+4y/2

x=-12+2y

Put this value of x in (i), we get,  

2(-12+2y) + 3y = 11

-24+4y+3y=11

7y=11+24

7y=35

y=35/7

y=5

now put this value of y in (iii)

=-12+2y

=-12+2(5)

=-12+10

=-2

y=mx+3                                      {y=5,x=-2)

5=m(-2)+3

5=-2m+3

5-3=-2m

2=-2m

2/2=-m

1=-m

-1=m