问题
解答题
|
答案
(1)x+
x=17 9 1 3
1
x=17 9 1 3
1
x÷17 9
=17 9
÷11 3 7 9
x=
;3 4
(2)x+25%x=0.375
1.25x=0.375
1.25x÷1.25=0.375÷1.25
x=0.3;
(3)
x-2 3
x=1.41 5
x=1.47 15
x÷7 15
=1.4÷7 15 7 15
x=3;
(4)
x-2 3
x=3 8 1 7
x=7 24 1 7
x÷7 24
=7 24
÷1 7 7 24
x=
.24 49