1) 400500 - 378626 = 21874
2) 21874 * 24 = 524976
3) 504336 : 84 =6004
4) 74592 + 6004 = 80596
5) 80596 + 524976 = 605572
-0.14x=1.12
x=1.12÷0.14
x=8
5/7×0.21-5/7×1.4x-4/9×0.36+4/9×4.5x-1=0
x=1.01
1)7/9*3/7=1/3
2)11/19*57/77=3/7
3)16/5*35/20=28/5=5 3/5
4)4*11/16=11/4=2 3/4