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You have to first get the eighths and the ninths to the same fraction. Multiply 8 by 9 = 64ths. Then cross - multiply the top numbers by the opposite dividend. Ie. 7x9(ths) and 4x8(ths) and add them together = 63+32 = 95/64ths = 1 31/64ths
It is seven ninths.
4/9 + 7/8 = 95/72
Four ninths
One-third plus three-ninths is 2/3.7/9
40/72 + 27/72 = 67/72
Eight and seven eighths.
The sum is 8 1/2 or 8.5
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It is 8 5/8.
4/9 plus 7/15 = 41/45 in its simplest form
One and twenty-seven over fourty
12 19/72
It is eight ninths.
4*5 + 7*9= 20+63=83.