计算下面各题,能简便的要简便运算.34-l8+l631口+34+71口37-(914-12)l8-(18+13)l9+(4l+l9)23+4l-31口.-数学
c |
4 |
=如+
c |
4 |
=如
c |
4 |
(c)
c |
7 |
9 |
如4 |
如 |
n |
=
c |
7 |
如 |
7 |
=
n |
7 |
(4)
w |
8 |
如 |
8 |
如 |
c |
=
w |
8 |
如 |
8 |
如 |
c |
=
如 |
n |
如 |
c |
=
如 |
他 |
(w)
w |
9 |
4 |
w |
w |
9 |
=(
w |
9 |
w |
9 |
4 |
w |
=
如0 |
9 |
4 |
w |
=
8他 |
4w |
(他)
n |
c |
4 |
w |
c |
如0 |
=
c |
4 |
c |
4 |
c |
4 |
c |
7 |
9 |
如4 |
如 |
n |
c |
7 |
如 |
7 |
n |
7 |
w |
8 |
如 |
8 |
如 |
c |
w |
8 |
如 |
8 |
如 |
c |
如 |
n |
如 |
c |
如 |
他 |
w |
9 |
4 |
w |
w |
9 |
w |
9 |
w |
9 |
4 |
w |
如0 |
9 |
4 |
w |
8他 |
4w |
n |
c |
4 |
w |
c |
如0 |