Question

(2-1/2)(3-1/3)(4-1/4)x1/5=3

Va rog ajutati-ma

Answer 1

Răspuns:

3 ;

Explicație pas cu pas:

(2-1/2)x(3-1/3)x(4-1/4)x(1/5) =

(4-1)/2x(9-1)/3x(16-1)/4x(1/5) =

(3/2)x(8/3)x(15/4)x(1/5) =

(3x8x15x1)/(2x3x4x5) = 360/120 = 3 ;

Answer 2

Răspuns:

Explicație pas cu pas:

(2-\frac{1}{2})*(3-\frac{1}{3})*(4-\frac{1}{4})*\frac{1}{5}=3

(\frac{4}{2}-\frac{1}{2})*(\frac{9}{3}-\frac{1}{3})*(\frac{16}{4}-\frac{1}{4})*\frac{1}{5}=3

frac{3}{2}*\frac{8}{3}*\frac{15}{4}*\frac{1}{5}=3

reducem ecuatia: 3 cu 3, 2 cu 8, 4 cu 4, 15 cu 5 si ramane 3=3.