23题分数运算,23题一个X的方程,24题2个X的方程(小学五年级)

如果你去年问我,我会.可我今年马上要上初中了.不过我还是可以回答的:
1 2/3+3/4;
2 5/16-1/4;
3 1/2+1/3-1/4;
4 1/4+2/5+3/4+2/5;
5 2/5-6/1;
6 2/9×5/8;
7 8/15-13/150;
8 2/7+6/19;
9 4/5÷2/3;
10 4/17+4/15;
11 5/8+2/9+3/8+7/9;
12 12/17+12/19;
13 14/15-13/15;
14 [〔2/3-3/5〕÷〔4/9+5/7〕]×4/9;
15 4/7÷7/9;
16 1/3×5/19×6/29;
17 7/5×8/9+6/7;
18 1/2+1/3-5/9;
19 1/4×1/5÷4/9+1/18;
20 5/9+5/6;
21 4/5×5/6×6/7×7/8;
22 4/7÷5/9×8/9;
23 19/20+19/21+19/22.
1 14X+36=148;
2 16X-670=994;
3 18+49-2X=1;
4 70-2X=30;
5 X-(12+6)=190;
6 6.2+X=8.96;
7 X-2.7=3.45;
8 12.7-X=1.6;
9 X+2.8=5.8;
10 X+3.4=8;
11 4-X=2.4;
12 X-3.5=10.5;
13 4X-2.6=5.4;
14 X+(7.3-4.8=9.2;
15 6.78+3X=27.78;
16 12.4+3.8-X=7.15;
17 7X=5.95;
18 80.64÷X=96;
19 53.2÷X=14;
20 X÷1.3=64;
21 0.9X=22.5;
22 1.68÷X=12;
23 0.4X-0.9=20.
1 1.8X+X=18.2;
2 3X+4X=217;
3 2X-X+3.6 =4.9;
4 5X-6+17X=28;
5 68-5X-13X=50;
6 15X+18X=66;
7 1+5X-2+6X=21;
8 14X+18X+1=385;
9 15+16+15X+16X=310;
10 4X+2X=480;
11 5X+4X-3=24;
12 6X-X=155;
13 5×6X-3X=217;
14 5×3X+16×8X=1287;
15 30X÷6X+5=10;
16 38X÷2=76;
17 25X-13X=240;
18 15X+1-16X=0;
19 19X-2+1-12X=48;
20 28X-15X=39;
21 24-13X+11X=2;
22 25X-12X=130;
23 4+3+2+1-X-2X=4;
24 78X-77X=120.
啊!手要断了!