Question

3x+4y=7 and 2x+y=-2 elimination method​

Answer 1

Answer:

x=(-3),y=4

Step-by-step explanation:

Multiply eq.(i) by 1 and eq. (ii) by 4.

3x+4y=7____(iii)

8x+4y =-8____(iv)

Substract iv from iii

-5x=15

x=-3

Substitute -3 in iii

3×(-3)+4y=7

4y=7+9

4y=16

y=4