y= -5x+7----------------------1
4x+3y=3-----------------------2
rearrange the equation 1
5x+y=7
4x+3y=3
now multiply first equation by 3
15x+3y=21
4x+3y=3
now subtract both of eqns
11x=18
x=18/11
now put this x values in eqns and find y value
y=-5x+7
y=-13/11