Gligorioana63194ask
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Dau coroana!
Calculati:
a)2/7+2/7;
b)3/5+(-7/5);
c)(-2/3)+(-5/3);
d)(+1/5)+(-2/5);
e)(-5/9)+(-4/9);
f)(-2/15)+(+16/15);
g)3/14+(+1/14);
h)2/21+(-2/21);
i)(‐5/8)+1/8.
Va rog repede! până la 19³⁰. Dau coroanaaaaa!!!​

Răspuns :

Carolinaellla71ask

a)

[tex] \frac{4}{7} [/tex]

b)

[tex] - \frac{4}{5} [/tex]

c) 1

d)

[tex] - \frac{1}{5} [/tex]

e) -1

f)

[tex] \frac{14}{15} [/tex]

g)

[tex] \frac{2}{7} [/tex]

h)

[tex] \frac{2}{7} [/tex]

h) 0

i)

[tex] - \frac{1}{2} [/tex]