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Math Help - Solution to math problem

  1. #1
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    Solution to math problem

    Can anyone please help me solve the following math problem?

    2/3 - 5/7 - 1/4 + 2

    If so can you please show how you arrived at the answer?

    Thank you
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  2. #2
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    \frac{2}{3}-\frac{5}{7}-\frac{1}{4}+2

    You must look for a common denominator

    \frac{2}{3}-\frac{5}{7}-\frac{1}{4}+\frac{2}{1}

    easiest way is to multiply the denominators together 3\times 7\times 4 = 84

    \frac{2\times 7\times 4}{84}-\frac{5 \times 4\times 3}{84}-\frac{1\times 7\times 3}{84}+\frac{2\times 84}{84}

    \frac{56-60 -21+84}{84}

    \frac{59}{84}
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  3. #3
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    Math Problem Solution

    Thank you
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  4. #4
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    hi,

    it should be 143/84. (2 X 84 = 168) which is (56-60-21+168)/84
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  5. #5
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    Thanks Gwen!

    \frac{2\times 7\times 4}{84}-\frac{5 \times 4\times 3}{84}-\frac{1\times 7\times 3}{84}+\frac{2\times 84}{84}

    \frac{56-60 -21+168}{84}

     \frac{143}{84}<br />
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  6. #6
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    1st mistake this year, pickslides?
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  7. #7
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    Quote Originally Posted by Wilmer View Post
    1st mistake this year, pickslides?

    Hahahaha I wish, I make plently of them. Should probably put a disclaimer in my sig along the lines: Use pickslide's solutions at own risk.
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