Question

Va rog ajutati-ma .daca se poate cu rezolvare(22pnct!!)

Answer 1

............................................

Answer 2

1.
80=2^4 • 5
48=2^4 • 3
cmmmc=2^4 • 3 • 5 =240
2.
(-10)•(-9)•0•...•9•10•11=0
3.
(12+3b)/(18+2a) = 2/3
2(18+2a)=3(12+3b)
36+4a=36+9b
4a=9b
a/b=9/4
4.
180° - 17°21' =
179°60' -
17°21'
_____
162°39'
5.
P=3L=12 =>L=4 cm
Aria unei fete (dreptunghi) = 20 (L•m) =>m=5 cm
Muchii sunt 3 =>suma este 15.
6.
a=3
b=16
a+b=19