-5/6 + 5*(-2/15) = -5/6 - 2/3 = -(5/6 + 4/6) = -9/6 = -1 3/6 = -1 1/2 = -1.5
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(-5/6 + 5) * (-2/15) = (-5/6)*(-2/15)+5*(-2/15) = 1/3 * 1/3 - 2/3 = 1/9 - 2/3 = 1/9 - 6/9 = -5/9
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-12*3/4 -2* 5/12 = -9 - 5/6 = -(9+5/6)=-9 5/6 =
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-12*(3/4-2)*5/12 = -12*(-1 1/4) * 5/12 = 12*5/4 * 5/12 = 25/4 = 6 1/4 = 6.25