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guajiro [1.7K]
3 years ago
6

What is the sum of 1 2/5 and 5 3/4​

Mathematics
2 answers:
Marizza181 [45]3 years ago
6 0

Answer:

<h2>\boxed{7 \frac{3}{20} }</h2>

Step-by-step explanation:

\mathrm{1 \frac{2}{5}  + 5 \frac{3}{4} }

Add the whole numbers and fractional parts of the mixed numbers separately

\mathrm{ = (1 + 5) + ( \frac{2}{5}  +  \frac{3}{4} })

Add the numbers

\mathrm{=6 + ( \frac{2}{5}  +  \frac{3}{4} )}

Add the fractions

\mathrm{=6 +  (\frac{2 \times 4 + 3 - 5}{20} )}

\mathrm{=6 +  \frac{23}{20} }

Convert the improper fractions into a mixed number

\mathrm{=6 + 1 \frac{3}{20} }

Write the mixed number as a sum of the whole number and the fractional part

\mathrm {= 6 + 1 +  \frac{3}{20} }

Add the numbers

\mathrm{ = 7 +  \frac{3}{20} }

Write the sum of the whole number and the fraction as a mixed number

\mathrm{ = 7 \frac{3}{20} }

Hope I helped

Best regards!

Art [367]3 years ago
4 0

Answer:

7\frac{3}{20}

Step-by-step explanation:

<em>Hey there!</em>

Well to add this we need to pu it in improper form.

7/5 + 23/4

Now we need to find the LCM.

5 - 5, 10, 15, 20, 25, 30

4 - 4, 8, 12, 16, 20, 24, 28

So the LCD is 20.

Now we need to change the 5 and 4 to 20.

5*4 = 20

7*4 = 28

<u>28/20</u>

4*5=20

23*5=115

<u>115/20</u>

Now we can add 28 and 115,

= 143/20

Simplified

7 3/20

<em>Hope this helps :)</em>

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