Question

Rezolvati in R ecuatiile :

a) 4x+3.(2x-1)= 17
b) 5+2.(3x-4)= 33
c) 5.(2x-1)+2= 27
d) 7x-4.(3x-2)= 3
e) 2x-6.(2x-3)= 8
f) 3x-2.(4x-1) = 12

Answer 1

Răspuns:

4x+6x-3=17 (desfacem paranteza)

10x=17+3=20

x=20:10

x=2

2×(..)=33-5=28

(...)=28:2=14

3x=14+4=18

x=18: 3

x=6

5×(2x-1)+2=27

5×(...)=27-2=25

(...)=25:5=5

2x=5+1=6

×=6:2

x=3