Question

Efectuați:
a)
$\frac{1}{18}$
+
$\frac{1}{9}$
+
$\frac{1}{6}$

b)
$\frac{7}{36 }$
-
$\frac{1}{18}$
+
$\frac{3}{4}$

c)
$\frac{37}{18}$
-
$\frac{3}{4}$
-
$\frac{5}{6}$

d)
$\frac{11}{18}$
-
$\frac{4}{9}$
+
$\frac{5}{6}$
-
$\frac{1}{3}$
este urgentttt va rog repede




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Answer 1

Amplificam fiecare fractie pentru a o aduce la numitor comun, deci:
a) 1/18+ 1/9+ 1/6=
=1/18+ 2/18+ 3/18=
=6/18=
=1/3

b) 7/36- 1/18+ 3/4=
=7/36- 2/36+ 27/36=
=32/36=
=8/9

c) 37/18- 3/4- 5/6=
=74/36- 27/36- 30/36=
=17/36

d) 11/18- 4/9+ 5/6- 1/3=
=11/18- 8/18+ 15/18- 6/18=
=12/18=
=2/3