问题
解答题
|
答案
(1)
x+2 5
=3 20 17 20
x+2 5
-3 20
=3 20
-17 20 3 20
x=2 5 7 10
x÷2 5
=2 5
÷7 10 2 5
x=1
;3 4
(2)
x+1 4
x=332 3
x=3311 12
x÷11 12
=33÷11 12 11 12
x=36;
(3)
x=3 4
÷3 10 4 5
x=3 4 3 8
x÷3 4
=3 4
÷3 8 3 4
x=
.1 2