Question

Efectuati: a) 1supra4+1supra2. b)1supra10+7supra5. c)3supra2+3supra10. d)3supra9+7supra3. e)11supra2+5supra6. f)4supra9+2supra3

Answer 1

Pentru a calcula aceste fractii trebuie ca de fiecare data sa aducem la acelasi numitor(numitor comun).
a)1/4+1/2=1+2/4=3/4(am amplificat a doua fractie cu 2)
b)1/10+7/5=1+14/10=15/10(am amplificat a doua fractie cu 2)
c)3/2+3/10=15+3/10=18/10(am amplificat prima fractie cu 5)
d)3/9+7/3=3+21/9=24/9(am amplificat a doua fractie cu 3)
e)11/2+5/6=33+5/6=38/6(am amplificat prima fractie cu 3)
f)4/9+2/3=4+6/9=10/9(am amplificat a doua fractie cu 3)
A amplifica o fractie inseamna a inmulti atat numaratorul(cel de sus), cat si numitorul(cel de jos) cu un numar dat.
sper ca te-am ajutat

Answer 2

a)$\frac{1}{4} + \frac{1}{2} = \frac{1}{4} + \frac{2}{4} = \frac{3}{4}$

b)$\frac{1}{10}+ \frac{7}{5} = \frac{1}{10}+\frac{14}{10} = \frac{15}{10}= \frac{3}{2}$

c)$\frac{3}{2} + \frac{3}{10} = \frac{15}{10} + \frac{3}{10} = \frac{18}{10}= \frac{9}{5}$

d)$\frac{3}{9} + \frac{7}{3}= \frac{1}{3}+ \frac{7}{3}= \frac{8}{3}$

e)$\frac{11}{2}+ \frac{5}{6} = \frac{33}{6}+\frac{5}{6}= \frac{38}{6}= \frac{19}{3}$

f)$\frac{4}{9}+\frac{2}{3} =\frac{4}{9}+\frac{6}{9}= \frac{10}{9}$