1.m+a-k-b
m-a+k+b
2.5-a+3=8-a
7+12-2b=18-2b
(3×3×3)-(3+3)=21
3×3=9×3=27
3+3=6
27-6=21
1) 1/6 + 1/10 = 5/30 + 3/30 = 8/30 = 4/15
2) 4/15 + 1/15 = 5/15 = 1/3
3) 3/5 - 1/3 = 9/15 - 5/15 = 4/15
4) 4/15 - 1/4 = 16/60 - 15/60 = 1/60
5) 1/3 : 1/60 = 1/3 * 60 = 20
Ответ: 20
48=1*48
48=2*24
48=3*16
48=4*12
48=6*8
это и будут значения m,n