Tolong cara mengerjakan nya cara perhityngan nya 3x-4y+5=0 5x+7y=35

5x+7y=35
misal x=0
5x+7y=35
5×0+7y=35
7y=35
y=35-7
y=28

misal y=0
5x+7y=35
5x+7×0=35
5x =35
x =35-5
x =30