Question

daca 5x+3/4 = 9/2, x=?

urgent!​

Answer 1

Răspuns:

$x = \frac{3}{4}$

Explicație pas cu pas:

$5x + \frac{3}{4} = \frac{9}{2}\\\\ 5x = \frac{9}{2} - \frac{3}{4}\\\\ 5x = \frac{18}{4}- \frac{3}{4}\\\\ 5x = \frac{15}{4}\\\\ x = \frac{15}{4}:5\\\\ x = \frac{15}{4*5}\\\\ x = \frac{3}{4*1}\\\\ x = \frac{3}{4}$

Answer 2

Răspuns:

5x=9/2-3/4

Aducem la numitor comun care este 4,amplificand pe 5cu 4,pe 9 cu 2

20x=18-3

20x=15

x=15/20=3/4

deci x=3/4