Question

a) 8 = - 3 x + 5
b) (x + 2) + ( x + 3) = 19
c) 3 * ( 2 x - 1) = 4 x + 5 ​

Answer 1

Răspuns:

a.8=-3x+5

8-5=-3x

3=-3x

-3x=3

x=3:-3

x=1

b. (x+2)+(x+3)=19

2x+5=19

2x=19-5

2x=14

x=7

c. 3*(2x-1)=4x+5

6x-3=4x+5

6x-4x=5+3

2x=8

x=8:2

x=4