Answer:
20
Step-by-step explanation:
substitute 5 for 'x':
6(5) - 2(5) = 30-10 = 20
second one I believe
2,4,6,8,10,12,14,16,18,20,22,24,26,28 for 2 3,6,9,12,15,18,21,24,27 for 3
for both 6,12,18,24
5:6 --> 10:12
A good way to think of this is to provide a perspective: there are 5 boys every time there is 6 girls. So if there is 10 boys, that means there would be 12 girls (because 5 *2 = 10 and 6*2 = 12).
tl:dr: 5 *2 = 10 so 6*2 = 12
