SOLUTION: please help me solve this problem: 1/5 - (-2/7). Write in simplest form.

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Question 168453: please help me solve this problem: 1/5 - (-2/7). Write in simplest form.
Answer by eggsarecool(46) About Me  (Show Source):
You can put this solution on YOUR website!
1%2F5+-+%28-2%2F7%29
so the two negatives will give you a positive,
1%2F5%2B2%2F7, then use a common denominator
+1%2F5=7%2F35 and 2%2F7=10%2F35
so 1%2F5%2B2%2F7=7%2F35%2B10%2F35=17%2F35 and 17/35 is the simplest form.