2.4÷0.22.4 32.8÷0.2532.8×4
9.2×1.19.2÷1.1 1.561.56×0.28
5.44……5.444 81÷0.98.1÷0.09 2.8×0.12.8÷0.1
9x+6x=4.8
2(x-3)=5.8
3x-12×6=36
×8<40
25>4×