388. Сократите дробь: 35 + 28
1)
35 - 28
75 – 33.
2)
-533
24 + 3
3)
24 – 3
15 +6
12 – 3
5) 12 + 3
26 + 2
6) 26 -2°
4) 15 – 6;

Question

Математика: 388. Сократите дробь: 35 + 28 1) 35 - 28 75 – 33. 2) -533 24 + 3 3) 24 – 3 15 +6 12 – 3 5) 12 + 3 26 + 2 6) 26 -2° 4) 15 – 6;

PWBC · Answer

35+28 / 35-28 = 7*(5+4) / 7*(5-4) = 5+4 / 5-4 = 9/1 = 9
75-33 / 75+33 = 3*(25-11) / 3*(25+11) = 25-11 / 25+11 = 14/36 = 7/18
24+3 / 24-3 = 3*(8+1) / 3*(8-1) = 9/7
15+6 / 15-6 = 3*(5+2) / 3*(3-2) = 5+2 / 3-2 = 7/1 = 7
12-3 / 12+3 = 3*(4-1) / 3*(4+1) = 3/5
26+2 / 26-2 = 2*(13+1) / 2*(13-1) = 14/12