1÷0.25= 0.39÷3= 4.6×5÷4.6×2=
1.25×0.8= 0.46+0.4= 12.8+7.5-12.8+7.5=
2(x-3)=6.8 4x-0.5x=0.7 3.5×6-3x=11.4
2.5x+4.5=19.5
(x+3.2)÷0.6=12
5x-1.4x=7.2