Question

5. Rezolvaţi în R ecuația: a) 3-6x=2-4x; d) (2x − 1) = 4; b) 2x+(3-6x)=-17; e) - (4x-1/3) = 1/2; c) 2(x+1)=3(x-1); f) 2(x+1)=4-(1+2x).​

Answer 1

Răspuns:

Explicație pas cu pas:

a) 3-6x=2-4x;

-6x+4x=2-3

-2x=-1

x=1/2

d) (2x − 1) = 4;

2x=4+1

2x=5

x=5/2

b) 2x+(3-6x)=-17;

2x-6x=-17-3

-4x=-20

x=20/4

x=5

e) - (4x-1/3) = 1/2;

-4x=1/2-1/3

-24x=3-2

-24x=1

x=-1/24

c) 2(x+1)=3(x-1);

2x+2=3x-3

2x-3x=-3-2

-x=-5

x=5

f) 2(x+1)=4-(1+2x).​

2x+2=4-1-2x

2x+2=3-2x

2x+2x=3-2

4x=1

x=1/4