脱式计算，能简便计算的要简便计算．75-1118÷116-23（51-3435）×51758-23×56+38415÷（139-718×87）710×[（23-12）÷76]．-数学
+
），
=
-1，
=
；
②（51-
）×
，
=51×
-
×
，
=15-
，
=14
；
③
-
×
+
，
=（
+
）-
，
=1-
，
=
；
④
÷（
-
×
），
=
÷（
-
），
=
÷1，
=
；
⑤
×[（
-
| 2 |
| 3 |
=
| 7 |
| 5 |
=
| 2 |
| 5 |
②（51-
| 34 |
| 35 |
| 5 |
| 17 |
=51×
| 5 |
| 17 |
| 34 |
| 35 |
| 5 |
| 17 |
=15-
| 2 |
| 7 |
=14
| 5 |
| 7 |
③
| 5 |
| 8 |
| 2 |
| 3 |
| 5 |
| 6 |
| 3 |
| 8 |
=（
| 5 |
| 8 |
| 3 |
| 8 |
| 5 |
| 9 |
=1-
| 5 |
| 9 |
=
| 4 |
| 9 |
④
| 4 |
| 15 |
| 13 |
| 9 |
| 7 |
| 18 |
| 8 |
| 7 |
=
| 4 |
| 15 |
| 13 |
| 9 |
| 4 |
| 9 |
=
| 4 |
| 15 |
=
| 4 |
| 15 |
⑤
| 7 |
| 10 |
| 2 |
| 3 |
