Question

Rezolva in multime numerele rationale, ecuatiile: a) x + 17 = 12 b) 3x - 5 = 22 c) 5x + 4 = 7x + 1 d)2(x - 3) + 1 = 5 - 4 (x - 2)

Answer 1

a)x=-5 b)3x=27 ; x=9
c)-2x=-3 ;x=3/2
d) 2x-6+1=5-4x-8
6x=2
x=2/6

Answer 2

Răspuns:

a) x+17=12

x=12-17

x= -5

b) 3x-5=22

3x=22+5

x=27/3

x=9

c) 5x+4=7x+1

5x-7x=1-4

-2x=-3

x=-3/2

d) 2 (x-3) +1 = 5-4 (x-2)

2x-6+1=5-4x+8

2x+4x = 5-8+6-1

6x= -2

x= -2/6

x=-1/3

sper că te-am ajutat