91/6 - 33/4
To calculate this we need to...
convert both numbers to improper (or 'top-heavy') fractions
to find the Lowest Common Multiple (LCM) of the two denominators
re-calculate the two numbes using the LCM
91/6 ..... 6 x 9 = 54 ..... 54 + 1 = 55 ..... 91/6 = 55/6
33/4 ..... 3 x 4 = 12 ..... 12 + 3 = 15 .... 33/4 = 15/4
The factors of 6 are 2 and 3, and the factors of 4 are 2 and 2 - so the LCM must be 2 x 2 x 3 = 12
55/6 = 110/12
15/4 = 45/12
110 - 45 = 65
65/12 = 55/12
9
2 equivalent fractions for 3-16ths = 6/32, 9/48
9/48ths=3/16ths. 9/12*1/4=9/48
minus 21 think of it as 12+9 which equals 21 then just whack a minus sign infront
2 equivalent fractions for 3-16ths = 6/32, 9/48
3 minus -9 is 12.
It is -6 minus -9 = +3. That's because minus -9 is the same as +9.
0
9 - -3 = 9 + 3 = 12 12 - 8 = 4 9 - -3 - 8 = 4
-9
2 - (-9) - 8 = 3
9/10 minus 3 is -2 1/10