(1-1/2+1/3-1/4.-1/100)/(1/50+1/51+1/52.+1/100)=?

(1-1/2+1/3-1/4.-1/100)/(1/50+1/51+1/52.+1/100)=?

(1-1/2+1/3-1/4.-1/100)
=(1+1/2+1/3+1/4.+1/100)-2*(1/2+1/4+1/6+.1/100)
=(1+1/2+1/3+1/4.+1/100)-(1+1/2+1/3+1/4+.1/50)
=1/51+1/52+1/53.+1/100
So your answer is 1, OK?
It's better to teach her to study by herself. I haven't encountered this kind of problem before, but as long as I understand mathematics, this kind of transformation is very simple
You must have got the wrong title

14°28'+42°42' 90°-30°15'20'' 55°28'+42°32'-13°27' 15°51'×2

14°28'+42°42' =56°60'=57°
90°-30°15'20'' =89°59'60''-30°15'20'' =59°44'40''
55°28'+42°32'-13°27' =97°60'-13°27' =84°33'
15°51'×2=30°102'=31°42

【1】 55 ° 28 ′ + 42 ° 32 ′ - 13 ° 27 ′ [2] 15 ° 51 ′× 2 divided by 5

55°28′+42°32′-13°27′
=97°60′-13°27′
=84°33′
15 ° 51 ′× 2 divided by 5
=30°102′÷5
=6°20.4′
=6°20′24’‘

12:18 6:5:4:3 18:0.09 97:26 153:51 34:51 152:114 162:90 104:65 52:26
34 91 out of 51 vs 14 102 out of 34 15 vs 4 out of 25

12:18 = 2 / 3 = 0.667
5 / 6 vs 3 / 4 = 10 / 9 = 1.111
18 vs 0.09 = 200
97 vs. 26 = 3.731
153 vs. 51 = 3
34 vs. 51 = 2 / 3 = 0.667
152 vs 114 = 76 / 57 = 4 / 3 = 1.333
162 vs 90 = 9 / 5 = 1.8
104 to 65 = 8 / 5 = 1.6
52 to 26 = 2
34 out of 51 = 2 / 3 = 0.667
91:14 = 13 / 2 = 6.5
102 vs. 34 = 3
4 / 15 vs 4 / 25 = 5 / 3 = 1.667