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Grace [21]
3 years ago
5

7 times as much as the sum of 1/3 and 4/5

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
5 0
First we need to make the fractions "compatible" for adding them easily, we can do that by equating their denominators using the common minimum multiple of their denominators 3 and 5 which is 15, so we have to multiply and divide to not modify them for a correct number, lets show that up:
1/3 = (5/5)(1/3) = 5*1/5*3 = 5/15, therefore: 1/3 = 5/15
4/5 = (3/3)(4/5) = 3*4/3*5 = 12/15, therefore 4/5 = 12/15
now we do the sum first:
<span>1/3 + 4/5
</span>= 5/15 + <span>12/15
= 17/15
and finally we multiply by 7
7*(</span><span>17/15</span>) = 119/15
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