问题
解答题
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答案
(1)7.36x÷2=2.16
7.36x÷2×2=2.16×2
7.36x÷7.36=4.32÷7.36
x=
;27 46
(2)x+
x=2 7 3 4
x÷9 7
=9 7
÷3 4 9 7
x=
;7 12
(3)9.x-
x=2 5 3 10
9x-
x=2 5 3 10
x÷43 5
=43 5
÷3 10 43 5
x=
;3 86
(4)x-
=2 5 3 10
x-
+2 5
=2 5
-9 10 2 5
x=
;1 2
(5)2x+7x=9 10
9x÷9=
÷99 10
x=
;1 10
(6)
+x=3 8 2 5
+x-3 8
=3 8
-2 5 3 8
x=
.1 40