1. Answer:
128/225
Step-by-step explanation:
Find the lest common denominator for 3/5 + 1/9 which is 45. 3/5 times 9, 1/9 times 5. So, then you have 27/45 + 5/45 = 32/45. So, then you do 32/45 times 4/5. 45 times 5 is 225. 32 times 4 is 128.
2. Answer:
1 7/60
Step-by-step explanation:
LCD for 3,5,4=60. 3 times 20 = 60. 5 times 12 equals 60. 4 times 15 equals 60.
So, then do 2 times 20 equals 40. 1 times 12 equals 12. 1 times 15 equals 15.
[tex]\frac{40}{60}+\frac{12}{60}+\frac{15}{60}[/tex] = [tex]\frac{67}{60} = 1 \frac{7}{60}[/tex]
Hope this helps!
