13/130 = 1/10 - сократили на 10
51/136 = 3/8 - сократили на 17
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65 - 13/130 - 26 = 65 - 26 - 1/10 = 39 - 1/10 = 38 10/10 - 1/10 = 38 9/10
153 - 51/136 + 17 = 153 + 17 - 3/8 = 170 - 3/8 = 169 8/8 - 3/8 = 169 5/8
1)нод равен=6. 2)нод равен=6.
8/56 = 1/7
7/63=1/9
3/60=1/20
4/10=2/5
5/95=1/19
4/76=1/19
24/30=4/5
9/81=1/9
4/68=1/17
6/14=3/7
5/85=1/17
6/8=2/4
1) 22,74+9,66=32,4
2) 937,7-30,6=907,1
3) 278,64:32,4=8,6
4) 907,1*8,6=7801,06