15-4又2/5-5又3/5 2又1/2+x=11 1/4-x=1/10= = == = == = =简便计算 (解方程)
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![15-4又2/5-5又3/5 2又1/2+x=11 1/4-x=1/10= = == = == = =简便计算 (解方程)](/uploads/image/z/2830489-25-9.jpg?t=15-4%E5%8F%882%2F5-5%E5%8F%883%2F5+2%E5%8F%881%2F2%2Bx%3D11+1%2F4-x%3D1%2F10%3D+%3D+%3D%3D+%3D+%3D%3D+%3D+%3D%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97+%EF%BC%88%E8%A7%A3%E6%96%B9%E7%A8%8B%EF%BC%89)
15-4又2/5-5又3/5 2又1/2+x=11 1/4-x=1/10= = == = == = =简便计算 (解方程)
15-4又2/5-5又3/5 2又1/2+x=11 1/4-x=1/10
= = =
= = =
= = =
简便计算 (解方程)
15-4又2/5-5又3/5 2又1/2+x=11 1/4-x=1/10= = == = == = =简便计算 (解方程)
15-4又2/5-5又3/5
=15-(4又2/5+5又3/5)
=15-10
=5
2又1/2+x=11
x=11-2.5
x=8.5
1/4-x=1/10
x=1/4-1/10
x=3/20
15-(4.4+5.6)=5
X=11-2.5=8.5
0.25-0.1=x x=0.15
15-(4+5)-(2/5+3/5 )=15-9-1=5
x=8.5
x=3/20
15-(4又2/5+5又3/5)=15-10=5,x=11-2又1/2=8又1/2,x=1/4-1/10=3/20
30/2-13/2-28/5=49/10
17/2
3/20望采纳一下