Question

1)436:100+8,02:2-73,2:30+30,8:200; 2)62,22:(y+5,4)=3,05; 3)20,4•(y-80,4):9,2=10;

Answer 1

1) 4,36+4,01-2,44+0,154=8,37-2,44+0,154=5,93+0,154=6,084
2) $frac{62,22}{y+5,4} = frac{305}{1000}$
    y+5,4=1000*62,22/305=204
    y=204-5,4=198,6
3) $frac{20,4y-1640,16}{9,2} =10$
    20,4y-1640,16=92
    20,4y=92+1640,16=1732,16
    y=$frac{1732,16}{20,4}$≈85