Răspuns:
Explicație pas cu pas:
a) 5/2÷5/7=5/2×7/5
5cu 5 se anuleaza = 7/2
b) 5/11÷13/5=5/11×5/13=25/143
c) 36/7÷24/14=36/7×14/24
36 si 24 se simplifica cu 12 si 14 si 7 se simpl. cu 7
= 6/2 simplificam cu 2 = 3
d) 52/27÷13/9 =52/27×9/13
Simplif 52si 13 cu 13
Simplif 9si 27 cu 9
=4/3
e) 78/25÷26/5=78/25×5/26
simplif. 78si26 cu 26 si 5cu25 prin5 =3/5
f) 5intr1/4÷21/2
Introducem intregii in fractie
21/4×2/21=1/2
g) 11intregi si 2/3÷36/5=
35/×5/36=175/108
h) 42/5÷8intregi si 2/5= 42/÷42/ = 42/5×5/42=1
i) 10intregi si 2/9÷11intregi si 4/8=92^9×8/92=8/9
J) 20intregi si 2/3÷15intregi si 2/4= 62/3×4/63=4/3
k) 31intr si 1/4÷20intr si 5/6= 125/4×6/125=3/2
l) 1200/72÷150/27= 27/9=3
m) 1575/49÷2025/225=1575/49×225/2025=14175/11025 simplificam fractia cu 25
= 567/441 simplif fractia cu 7
=81/63 simpl fractia cu 9
=9/7
n)57/3192÷206/5768= 57/3192×5768/206 = 41097/82194 = 1/2
