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1.解方程1-1/3X=1/7X+7/9X=4/33X-5/6=5/122.简便计算3/5+3/5+3/5+3/517/8+3/5-9/8-1/5(4/5)*45-(4/5)/(1/45)就这些好的话我会在加分!
题目详情
1.解方程
1-1/3X=1/7
X+7/9X=4/3
3X-5/6=5/12
2.简便计算
3/5+3/5+3/5+3/5
17/8+3/5-9/8-1/5
(4/5)*45-(4/5)/(1/45)
就这些 好的话我会在加分!
1-1/3X=1/7
X+7/9X=4/3
3X-5/6=5/12
2.简便计算
3/5+3/5+3/5+3/5
17/8+3/5-9/8-1/5
(4/5)*45-(4/5)/(1/45)
就这些 好的话我会在加分!
▼优质解答
答案和解析
1-1/3X=1/7
1/3x=1-1/7=6/7 x=18/7
X+7/9X=4/3
16x/9=4/3 x=36/48=3/4
3X-5/6=5/12
3x=5/6+5/12=15/12=5/4 x=5/12
2.简便计算
3/5+3/5+3/5+3/5 =3*4/5=12/5
17/8+3/5-9/8-1/5 =(17-9)/8+(3-1)/5=1+2/5=7/5
4/5*45-(4/5)/(1/45)= 4/5*45-4/5*45=0
1/3x=1-1/7=6/7 x=18/7
X+7/9X=4/3
16x/9=4/3 x=36/48=3/4
3X-5/6=5/12
3x=5/6+5/12=15/12=5/4 x=5/12
2.简便计算
3/5+3/5+3/5+3/5 =3*4/5=12/5
17/8+3/5-9/8-1/5 =(17-9)/8+(3-1)/5=1+2/5=7/5
4/5*45-(4/5)/(1/45)= 4/5*45-4/5*45=0
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