Question

d)-5/12×(4+(-3/10))+5/9
e)7/12+(-2/3)(-1/4)-5/6

Answer 1

d) - 5/12 * [¹⁰⁾4 + (-3/10)] + 5/9 =
    - 5/12 * [40/40 - 3/10] + 5/9 =
    - 5/12 * 37/10 + 5/9 =
    - ³⁾37/24 + ⁸⁾5/9 =
    - 111/72 + 40/72 =
    - 71/72
e) 7/12 + (- 2/3)(- 1/4) - 5/6 =
    7/12 + ⁶⁾1/2 - ²⁾5/6 =
    7/12 + 6/12 - 10/12 =
     3/12 =
     1/4