1)12+k/n+23 k=3 n=2
12+k/n+23 k=4 n=7
12+3/2+23 =15/25 = 3/5
12+4/7+23 = 16/30 = 8/15
2) k+2/n+8 k=3 n=2
k+2/n+ k=4 n=7
3+2/2+8 = 5/8
4+2/7+8 = 6/15
3) 25 – k/56 – n k=3 n=2
25 – k/56 – n k=4 n=7
25 – 3/56 – 2 = 23/54
23 – 4/56 – 7 = 19/49
4) 32 + k/56 - n k=3 n=2
32 + n/56 – n k=4 n=7
32 +3/56 – 2 = 35/54
32 + 4/56 – 7 = 36/49
1)12+k/n+23 k=3 n=2
12+k/n+23 k=4 n=7
12+3/2+23 =15/25 = 3/5
12+4/7+23 = 16/30 = 8/15
2) k+2/n+8 k=3 n=2
k+2/n+ k=4 n=7
3+2/2+8 = 5/8
4+2/7+8 = 6/15
3) 25 – k/56 – n k=3 n=2
25 – k/56 – n k=4 n=7
25 – 3/56 – 2 = 23/54
23 – 4/56 – 7 = 19/49
4) 32 + k/56 - n k=3 n=2
32 + n/56 – n k=4 n=7
32 +3/56 – 2 = 35/54
32 + 4/56 – 7 = 36/49