8,4y=24,36
y= 24,36÷8,4
y= 2,9
24009-18960=5049.
5049*6=30294
3250-2905=345
345:5=69
7535*5=37675
37675+18948=56623
3*56623=169869
Номер 996.
1) (3/16+5/12)-3/8=(9/48+20/48)-18/48=11/48.
2) (11/12+5/6)-3/4=(11/12+10/12)-9/12=12/12=1.
3)(4/15+5/8)-3/5=(32/120+75/120)-72/120=35/120.
4) (1/5+13/16)-9/20=(16/80+65/80)-36/80=45/80.