Question

Rezolvați ecuatiile:
a) x+7=11

b) 2(x+3)=14

c) 2×+ 1 supra 2 = 9 supra 2​

Answer 1

Răspuns:

1.)x+7=11

x=11-7

x=4

2.)2(x+3)=14

2x+6=14

2x=14-6

2x=8

x=4

3.)

$2x + \frac{1}{2} = \frac{9}{2}$

$2x = \frac{9}{2} - \frac{1}{2}$

$2x = \frac{8}{2}$

$2x = 4$

$x = 2$