Question

Calculează:

a)(3 -1/3)•(9/8)² b)3/4:(3/4-1/2)-4/9​

Answer 1

Răspuns:

• 27/8
• 23/9

Explicație pas cu pas:

a)(3 - 1/3) × (9/8)² = 8/3 × 81/64 = 27/8

b)3/4 : (3/4 - 1/2) - 4/9 = 3/4 : 1/4 - 4/9

= 3/4 × 4 - 4/9 = 3 - 4/9 = 23/9

Answer 2

• (A) 3³/2⁵ sau 27/32
• (B) 23/9

Explicație pas cu pas:

Bună!

(A)

(3 - 1/3) • (9/8)² =

(3/3 - 1/3) • 3⁴/2⁶ =

2/3 • 3⁴/2⁶ =

3³/2⁵ sau 27/32

(B)

3/4 : (3/4 - 1/2) - 4/9 =

3/4 : (3/4 - 2/4) - 4/9 =

3/4 : 1/4 - 4/9 =

3/4 • 4/1 - 4/9 =

3/1 - 4/9 = 

27/9 - 4/9 = 

23/9