①3/4x-5×x%=17.5 ②4+6×(3x-2)=16x ③1又1/2÷(x-0.45)=6/6 ④4x-6 3x-1 ________=_________ 5 4
问题描述:
①3/4x-5×x%=17.5 ②4+6×(3x-2)=16x ③1又1/2÷(x-0.45)=6/6 ④4x-6 3x-1 ________=_________ 5 4
⑤(x+12)×4/5=42-x
⑦x/4-x/5=20
⑧x+1/3x+(1/3×3/4)x=114
⑨1÷4x=1又1/8
1÷3x=1又1/9
每个分数都是分母在后,分子在前,如分子:1/分母:2
虽说很多到,每到要过程,求各位了,我不会啊,谢谢了,悬赏我多给点
答
①3/4x-5×x%=17.5
0.75-0.05x=17.5
0.05x= -16.75
x= -335
②4+6×(3x-2)=16x
4+18x-12=16x
2x=8
x=4
③1又1/2÷(x-0.45)=6/6
1.5÷(x-0.45)=1
x-0.45=1.5
x=1.95
④(4x-6)/5= (3x-1)/4
5(3x-1)=4(4x-6)
15x-5=16x-24
x=19
⑤(x+12)×4/5=42-x
4x+48=210-5x
9x= -162
x= -54
⑦x/4-x/5=20
5x-4x=400
x=400
⑧x+1/3x+(1/3×3/4)x=114
4/3x+1/4x=114
19x=1368
x=72
⑨1÷4x=1又1/8
1÷4x=9/8
36x=8
x=2/9
1÷3x=1又1/9
1÷3x=10/9
30x=9
x=3/10哎,晚了!