Question

Va rog mult am uitat ecuatiile rezolvati ex. 15!!!!!

Answer 1

Răspuns:

a) 2x+7-3x-12=- 4x -6+2x

-x-5=-2x-6

-x+2x=-6+5

x=-1

b).4x+12-2x=6-6+3x

2x+12=3x

2x-3x=-12

-x=-12

x=12

c).4x+7+5x+15=6x+1

9x+22=6x+1

9x-6x=1-22

3x=-21

x=-7

d). 3x+6+2x-4=4x+4+6

5x+2=4x+10

5x-4x=10-2

x=8

Explicație pas cu pas: