题目内容
解方程
(1)
X÷
=18
(2)X-40%X=30.
(1)
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(2)X-40%X=30.
(1)
X÷
=18,
X÷
×
=18×
,
x÷
=3÷
,
x=4;
(2)X-40%X=30,
60%x=30,
60%x÷60%=30÷60%,
x=50.
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x=4;
(2)X-40%X=30,
60%x=30,
60%x÷60%=30÷60%,
x=50.
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