Answer:
23: 21[tex]\frac{23}{55}[/tex] 25: 1[tex]\frac{44}{45}[/tex]
Step-by-step explanation:
Question 23:
1) add the whole numbers together: 15+5=20
2)To add fractions, both need to have the same denominator. Find a number that is a multiple of both denominators (in this case 55)
[tex]\frac{9}{11}[/tex] → [tex]\frac{45}{55}[/tex] (multiply the numerator and denominator by 5)
[tex]\frac{3}{5}[/tex] → [tex]\frac{33}{55}[/tex] (multiply the numerator and denominator by 11)
3) add the fractions together
[tex]\frac{45}{55}[/tex] + [tex]\frac{33}{55}[/tex] = [tex]\frac{78}{55}[/tex] (add the numerators)
4) Turn the improper fraction into a mixed number
Divide 78 by 55. You'll get a whole number and a remainder. The remainder is the new numerator: In this case 55 enters 78 once with a remainder of 23. Therefore:
1[tex]\frac{23}{55}[/tex]
5) Add the whole numbers together to get the final answer:
20+1= 21
Answer: 21[tex]\frac{23}{55}[/tex]
Question 25:
Follow the above steps but subtract instead of adding
