3/4+3/20

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justaguide's profile pic

justaguide | College Teacher | (Level 2) Distinguished Educator

Posted on

The sum of 3/4 + 3/20 can be calculated in the following way

3/4 + 3/20

make the denominator the same, here it would be 20

3*5 / 4*5 + 3/ 20

=> 15/20 + 3/ 20

=> (15 + 3) / 20

=> 18/20

simplify

=> 9/10

The result is 3/4 + 3/20 = 9/10

zumba96's profile pic

zumba96 | Student, Grade 11 | (Level 3) Valedictorian

Posted on

3/4+3/20

Find the LCM 

The LCM is 20

Multiply 3/4 x 5 to achieve a denominator of 20

15/20+3/20=18/20

atyourservice's profile pic

atyourservice | Student, Grade 11 | (Level 3) Valedictorian

Posted on

`3/4+3/20   `

`3/4 xx 5 = 15/20 `
 
`15/20xx3/20=18/20`
giorgiana1976's profile pic

giorgiana1976 | College Teacher | (Level 3) Valedictorian

Posted on

To add 2 fractions, you'll have to have the same denominator.

The least common denominator is 20 = 4*5.

We'll multiply by 5 the 1st fraction:

(3*5 + 3)/20

We'll factorize by 3:

(3*5 + 3)/20 = 3(5 + 1)/20

We'll add what is inside brackets:

3(5 + 1)/20 = 3*6/20

3(5 + 1)/20 = 18/20

3(5 + 1)/20 = 2*9/2*10

3(5 + 1)/20 = 9/10

The result of adding the given fractions is: 3/4+3/20 = 9/10.

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