Question

Sa se rezolve urmatoarele ecuatii de gradul I: a). x-1=5 ; b). 3-2 (x-1) =x+5 ; c). 3 (x - 1) +4 (x - 2) =5; d). (2x+3)la puterea 2=(3x-1)(3x+1);​

Answer 1

Răspuns:

a) x-1=5

x=5+1

x=6

b)3-2(x-1)=x+5

x-2=x+5

x-3-x-5=0

x=-3-5

x=-8

c) 3x-3+4x-8=5

3x-3+4x-8-5=0

7x-16=0

7x=16

x=16-7

x=9