154×78154 18.7×3.118.7
1.14×0.860.86 4.69×0.994.69×1.2
0.49×9.449×0.094 9.6×0.980.96×98
①x÷5.8=3.2
②7×7-3x=40
③5x+6x=99
④40-9x=5
⑤6(x-3)=24
⑥3x-7.68=0.42