Division before subtraction.
Math has a standard precedence of operation and so the problem is (5/6)-(1/4) = 0.58333 = 7/12
It would be 3.33333333
÷/÷ = +
minus (negative) A negative number multiplied or divided by a negative is a positive. Then, multiplied or divided by another negative gives you a negative. A negative added to a negative is a negative. So adding a third negative is still a negative. Subtracting a - from a - is a -. So, subtracting a third - is still a -. No matter what operation you do, three negatives is a negative.
4 divided by 9 minus 1 divided 12?
(-9) / 3 = -3 . Minus nine divided by three is equal to minus three