问题
解答题
|
答案
(1)
×4 9
÷15 16 5 6
=
÷5 12 5 6
=
;1 2
(2)
:1 2
=1 5
:x1 4
x=1 2
×1 5 1 4
x÷1 2
=1 2
÷1 20 1 2
x=
;1 10
(3)
+0.25+5%+19 20 3 4
=(
+5%)+(0.25+19 20
)3 4
=1+1
=2;
(4)
x-11 12
=65x 120%
x=651 12
x÷1 12
=65÷1 12 1 12
x=780.