2 and 7/10 + 5 and 3/10 = 8
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1/5 + 3/10 = 2/10 + 3/10 = 5/10 = 1/2
You have an operator missing between the 3 and 2. Putting the 4 standard operators in, these are the answers: 7 + 8 - 3 + 2 - 5 + 10 = 19 7 + 8 - 3 - 2 - 5 + 10 = 15 7 + 8 - 3 x 2 - 5 + 10 = 14 7 + 8 - 3 ÷ 2 - 5 + 10 = 18.5
The answer is 1/2 plus 3/10 = 4/5 in its simplest form
1/5 + 3/10 = 2/10 + 3/10 = 5/10 = 1/2
-2 Same as plus 3 minus 5. If you don't believe it, Put +10 in front and take it away afterwards : 10-5+3-10 is 8-10 is -2. If you keep the sign in front of each number, then you can switch around: (-5)+(+3) is (+3)+(-5) is (-2)