Question

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

Answer 1

Răspuns:

a) 420,b)2280,c)210

Explicație pas cu pas:

a) 8+5*(20+3*26-15)-3=8+5*(20+78-15)-3=8+5*83-3=8+415-3=423-3=420

b) (150+12*8-(28-10))*10=(150+12*8-18)*10=(150+96-18)*10=(246-18)*10=228*10=2280

c) 5+5*(5+2*(5+25-6))=5+5*(5+2*(30-6))=5+5*(5+2*24)=5+5*(5+48)=5+5*43=5+215=210