x = 6. Calculează respectând regulile învăţate a) 8 + 5 * (20 + 3 * (2 + 4 + 6) – 15] - 3 = ? b) (150 + 12 x 8- (14 * 2 – 40 : 4)] * 10 = ? c) 5 + 5 x [5 + 2 * (5 + 25 * 1 – 24:4)] = ?

Răspuns:
a)8+5×[20+3×(2+24)-15]-3=?
8+5×[20+3×28-15]-3=?
8+5×(20+84-15)-3=?
8+5×(20+69)-3=?
8+5×89-3=?
8+445-3=?
8+442=?
450
b)[150+12×8-(28-10)]×10=?
[150+12×8-18]×10=?
[150+96-18]×10
[150+78]×10
228×10
2280
c) 5+5×[5+2×(5+25-6)]=?
5+5×[5+2×(5+19)]
5+5×[5+2×24]
5+5×[5+48]
5+5×53
5+265
270
Sper ca te-am ajutat;)
coroană??