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17/30÷(3/5+2×1/8)简便计算1/6x÷1/8=8/9x-40%x=2/5x-5/12=5/42÷5/28这是方程,
题目详情
17/30÷(3/5+2×1/8)简便计算
1/6x÷1/8=8/9 x-40%x=2/5 x-5/12=5/42÷5/28
这是方程,
1/6x÷1/8=8/9 x-40%x=2/5 x-5/12=5/42÷5/28
这是方程,
▼优质解答
答案和解析
17/30÷(3/5+2×1/8)
=17/30÷(3/5+1/4)
=17/30÷(12/20+5/20)
=17/30÷17/20
=17/30×20/17
=2/3
1/6x÷1/8=8/9
1/6x=8/9×1/8
1/6x=1/9
x=1/9÷1/6
x=1/9×6/1
x=2/3
x-40%x=2/5
(1-0.4)x=0.4
0.6x=0.4
x=0.4÷0.6
x=0.4/0.6
x=4/6
x=2/3
x-5/12=5/42÷5/28
x-5/12=5/42×28/5
x-5/12=2/3
x=2/3+5/12
x=8/12+5/12
x=13/12
=17/30÷(3/5+1/4)
=17/30÷(12/20+5/20)
=17/30÷17/20
=17/30×20/17
=2/3
1/6x÷1/8=8/9
1/6x=8/9×1/8
1/6x=1/9
x=1/9÷1/6
x=1/9×6/1
x=2/3
x-40%x=2/5
(1-0.4)x=0.4
0.6x=0.4
x=0.4÷0.6
x=0.4/0.6
x=4/6
x=2/3
x-5/12=5/42÷5/28
x-5/12=5/42×28/5
x-5/12=2/3
x=2/3+5/12
x=8/12+5/12
x=13/12
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