Tìm y biết
bài 4: Tìm y biết:
1.39+7x(y+1)=60 6.y:7x34=8704
2.7+2x(y-3)=11 7.yx8:9=8440
3.21-5x(y-4)=11 8.38934:yx4=84
4.96-3x(60-y)=42 9.85xy:19=5890
5.123-5x(y+4)=38 10.y:5:4 =80
1.39+7x(y+1)=60 6.y:7x34=8704
2.7+2x(y-3)=11 7.yx8:9=8440
3.21-5x(y-4)=11 8.38934:yx4=84
4.96-3x(60-y)=42 9.85xy:19=5890
5.123-5x(y+4)=38 10.y:5:4 =80