Answer:
b= 2 over 7
Step-by-step explanation:
exact form b= 2 over 7
decimal form b= 0.285714
N = 3
I hope I helped you^_^
2/15 + 27/35 = 14+81 /105 = 95/105 = 19/21
so, your answer is 19/21
Mary is 7
If their ages combined equals 21 and john is twice Mary’s age then johns age takes up 2/3 of 21. that would b 14. 14 is 2 x 7. and Mary is 7. 14+7=21. Mary is 7 years old
