Question

Rezolvati urmatoarele ecuatii:1)4x-(1+3x)=-9 ,x apartinr R
2)x√2 =12 ,x apartine R
3) x supra 2 -1 =x ,x aprtine R
4) |t|=5,t apartine N
5)|x| +1=0 ,x apartine Z
6)2 |x|-1=11,x apartine Z \N

Answer 1

1) 4x-1-3x=-9
1x-1=-9
x=-9+1
x=-8