Question

Calculeaza:
Dau coroana+50 pct​

Answer 1

Răspuns:

x = 5/8

Explicație pas cu pas:

[(2x + 15/4) : 5/2 + 1/2] : 1/2 = 5

[(2x + 15/4) × 2/5 + 1/2] × 2/1 = 5

(4x/5 + 30/20 + 1/2) × 2 = 5

(4x/5 + 3/2 + 1/2) × 2 = 5

(4x/5 + 4/2) × 2 = 5

8x/5 + 8/2 = 5

8x/5 + 4 = 5

8x/5 = 1

8x = 5

x = 5/8