| x-0.5x=27.5 | (x-6)×(1+40%)=56 | 9:x=
|
0.5x÷0.5=27.5÷0.5,
x=55;
(2)(x-6)×(1+40%)=56,
(x-6)×1.4÷1.4=56÷1.4,
x-6+6=40+6,
x=46;
(3)9:x=
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x=15.
编辑:chaxungu时间:2026-04-27 13:37:55分类:小学数学题库
| x-0.5x=27.5 | (x-6)×(1+40%)=56 | 9:x=
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