Princesskhatelyngangidn
Answered

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1. How do you add or subtract similar or like fractions? 2. How do you add or subtract dissimilar or unlike fractions? 
3. Tell whether the sum is correct in the equation. If not, explain why. (
1/4+3/5=4/9)
4. Show how you will get the sum: 2/8+5/8=
5. Show how you will find the difference: 4/9-3/18=

Sagot :

Answer:

1. simply add the numerator of the fractions. e.g 1/2 +3/2 since both have the denominator (2), you can add their respective numerators. (1+3)/2 = 4/2 = 2.

2. ) you can add or subtract dissimilar fractions by getting the LCM of their denominators. and multiply numerator and denominator by their LCM.

3.) Not correct, answer is: 17/20

1/4+3/5

since the LCM of 4 and 5 is 20, we multiply the top and bottom to be 20

- (5+12)/20

- 17/20

4.) 7/8

2/8 + 5/8 have the same denominator (8) so we can add their numerators 2 and 5 respectively.

(2+5)/8

- 7/8

5.) 5/18

4/9 - 3/18 have different denominators 9 and 18. but since 18 is a multiple of 9. we can simply multiply 4/9 by 2/2 and we'll get 8/18.

now we have the same denominator we can subtract their numerators 8 and 3 respectively

(8-3)/18

- 5/18

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