问题
解答题
(1)4
(2)解方程:
|
答案
(1)原式=
+9 2
×9 2
+23 8
×1 8 9 2
=
(1+9 2
+23 8
)1 8
=
(1+3)=18;9 2
(2)x=
÷7 5 2 3
x=
×7 5 3 2
x=
=221 10
.1 10
(1)4
(2)解方程:
|
(1)原式=
+9 2
×9 2
+23 8
×1 8 9 2
=
(1+9 2
+23 8
)1 8
=
(1+3)=18;9 2
(2)x=
÷7 5 2 3
x=
×7 5 3 2
x=
=221 10
.1 10