Question

What is the solution to the system of equations?
3 x minus 4 y = 16. 2 x + 3 y = 5.
(–4, 1)
(4, –1)
(–4, –1)
(4, 1)

Answer 1

4,-1

Step-by-step explanation:

2

3x-4y=16 sub x=4 and y=-1 then aLHS=RHS and sub eqetion2 it will be LHS=RHS

Answer 2

Answer:

Answer is (b) that is 4 and - 1

Step-by-step explanation:

3x-4y=16. (equation. 1st)

2x+3y=5. (equation 2nd)

Multiply equation 1st by 2 and equation 2nd by 3 and we get

6x-8y=32. (equation 3rd)

6x+9y=15. (equation 4th)

And now solve equation 3rd and 4th

6x-8y=32

6x+9y=15

- - -

=-17y=17

y=-1

On putting y=-1 in equation 1st

x=16+4y/3

x=16+4*(-1)/3

x=16-4/3

x=12/3

x=4

Hence, x=4 and y=-1