Question

4x+3y= 7, 5x_ 6y + 1= 0​

Answer 1

1. 4x+3y=7_________(1)×5

5x-6y=-1_________(2)×4

2. 20x+15y=35_______(1)

20x-24y=-4________(2)

(1)-(2)

20x+15y=35_______(1)

-20x+24y= 4_______(2)

_________________________

0(x)+39y=39

y=1

substitute in 1 st Equation

20x+15(1)=35

20x =35-15

x =35-15/20

x =10/20

x=1/2

x=0.5