Question

4x + 5y = 7 & 3x + 4y = 5​

Answer 1

Answer:

x=3, y= -1

Step-by-step explanation:

Multiply eq1 with 3 and eq 2 with 4

Then subtract eq1 and eq2

Answer 2

Answer:

eqn 1 ×3

12x+15y=21

eqn 2×4

12x+16y=20

eqn1 - eqn2

y= -1

substitute y= -1 in eqn 1

4x - 5=7

4x=12

x=3

solns

x = 3 , y = -1