Solve. - 2/5 + 7/10 + 2/7

205/350 is the answer because if you do - 2/5+7/10 first then you get 15/50. You get this by 7*5 + - 2*10 for the numerator. The for the domanator just multiply the domanators. Then do the same for the other fraction.

The answer is 41/70! If you get the LCD, which is 70, you multiply all denominators by a number which gives you 70. Then, you would do the same for the top number