1)7:8=х:98; 2)у:1.5/31=7.3/4:1/3; 3)а/0,6=25/3; 4)2+t/5=4/9;

Question

1)7:8=х:98; 2)у:1.5/31=7.3/4:1/3; 3)а/0,6=25/3; 4)2+t/5=4/9;

Answer 1

1) 7:8=х:98
7*98=8х
х=98*7/8
х=85,75

3) а/0,6=25/3
3*а=0,6*25
3а=15,6
а=15,6/3
а=5,2

4) 2+т/5=4/9
т/5=4/9-2
т/5=4/9-18/9
т/5=-14/9
т=-14*5/9
т=-70/9
т=-7 7/9