1.х=18024:6=3004
2.х=3480-730=2750
3.х=12004-2010=9994
1
1/4 и 5/8
НОК(4, 8) = 8
1/4 = 1*2/4*2 = 2/8
5/8 = 5/8
2
11/12 и 1/18
НОК(12, 18) = 36
11/12 = 11*3/12*3 = 33/36
1/18 = 2/36
3
3/7 и 2/15
НОК(7, 15) = 105
3/7 = 3*15/7*15 = 45/105
2/15 = 2*7/15*7 = 14/105
20*5=100
50*3=150
50*4-200, 200/5=40
280/4=70, 280-70=210
450/9=50,50*3=150