which of the following is the sum of 3/8 and 4/7

Question

which of the following is the sum of 3/8 and 4/7

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Eirian 3 years 2021-07-31T19:14:20+00:00 2 Answers 9 views 0

Answers ( )

  1. taiduc
    0
    2021-07-31T19:15:41+00:00
    Reply

    Answer:

    53/56

    Step-by-step explanation:

    3/8 + 4/7

    Get a common denominator of 56

    3/6 * 7/7 = 21/56

    4/7 *8/8 = 32/56

    21/56+ 32/56 = 53/56

  2. diemthu
    0
    2021-07-31T19:16:01+00:00
    Reply

    53/56

    Step-by-step explanation:

    \frac{3}{8} + \frac{4}{7}

    Find the LCM

    LCM = 56

    \frac{3 + 8}{56} \\ \frac{(56 \div 8) \times 3}{56} + \frac{(56 \div 7) \times 8}{56} \\

    \frac{21 + 32}{56} </strong><strong>

    = 53/56

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