Question

Urgent! Ofer multe puncte si coroana.
a) x+1/3 - 2,5 = x/2
b) 13 - 2x = 7,5 - x

Answer 1

$a)x + \frac{1}{3} - 2.5 = \frac{x}{2} \\ \\ x + \frac{1}{3} - \frac{5}{2} = \frac{x}{2} \\ \\ x - \frac{13}{6} = \frac{x}{2} \\ \\ 6x - 13 = 3x \\ \\ 6x - 3x = 13 \\ \\ 3x = 13 \\ \\ x = \frac{13}{3}$

b)13-2x=7,5-x

13-2x+x=7,5

-2x+x=7,5-13

-x=7,5-13=-5,5

=>x=5,5