49
276
49
1/14 + 2/35 + 3/12 = 53/140
10/35 + 14/35 = 24/35
35
3
2+1+3+15+14=35
X+14=-21 X=-21-14 X=-35 is your answer.
280
2/5 = 14/35 6/7 = 30/35 44/35= 1 9/35
2/7 is 10/35, 2/5 is 14/35, add these to get 24/35
The answer is 350. Simply add the numbers together like you would for two plus two. To check your work, a calculator is the best option.110