x﹣60%x=36
0.5x﹣2.5=2.5
①3.86+19.7+6.14
② + ÷
③28.26÷3.14×1.2
④ × ﹣ ÷
①8×2.5×0.125÷
②(+﹣)×24
③6.5÷×
④(+)×+
⑤4×(﹣)×9
⑥÷7+×
路程/千米
10
20
30
40
…
油耗量/升
1
2
3
4