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Solve the ff: 1. take away 28.567 from the sum of 19.54 and 27.69 2. deduct 15.729 from the sum of 26.84 and 4.5 3. reduce the sum of 78.4 and 69.354 by the sum of the 12.43 and 16.5467 4.raffy and luis have a combined weight of 118.42 kilograms. if raffy is heavier by 8.06 kilograms, how much do each of them weigh? 5. the water bill costs php875.50 while the phone bill costs php687.25 more. how much will be needed to pay for the bills?