Question

Calculați:
$\frac{5x}{9} - \frac{5x}{20} + 600$
​

Answer 1

Răspuns:

Numitor comun

9=3^2

20=2^2×5

cmmmc = 2^2 × 3^2 × 5 = 180

(100x + 45x + 108000)/180 =

(145x + 108000)/180 =

5(29x + 21600)/180 =

(29x + 21600)/36