Question

2x - y + 3 = 0,
3x - 7y + 10 = 0

solve for X and Y using substitution, elimination and cross multiplication methods​

Answer 1

Step-by-step explanation:

multiplication in eqn 1

14x-7y-21

3x-7y-10

11x=11 x=-1

-14-7y-21=0

-7y-35=0

y=-5

Answer 2

Answer:

By substitution method......

2x-y+3=0

2x-y=(-3)......(I)

3x-7y+10=0

3x-7y=(-10).....(ii)

Now from 1

2x=y-3

x=y-3/2.......(iii)

Now from 2

3x-7y=-10

3(y-3/2)-7y=-10 (Putting value of x from 3)

(3y-9/2)-7y=-10

(3y-9-14y/2)=-10

-11y-9=-20

-11y=-11

y=1

Putting value of y we get

x=y-3/2

x=1-3/2

x=-2/2

x=-1

So x=-1 and y=1

Thank you

Hope it will help

please mark it as brainliest