Răspuns :

Noaccoun779id

a) 120: (180-1000:x)+24x7=190

=(180-1000:x)+24x7=190x120=22800

=180-1000:x+24=22800:7=3257

=180-1000:x=3257-24=3233

=1000:x=3233+180=3413

x=3413x1000

x=3413000

b)5x[2x(3x-12)-1]+4=29

=[2x(3x-12)-1]+4=29:5=6 (aproximăm)

=3x-12-1+4=6:2=3

=3x-12-1=3-4=-1

=3x-12=-1+1=0

3x=0+12

3x=12

x=12:3

x=4

Sper că te-am ajutat!

Targoviste44id

[tex]\it 5\cdot[2\cdot(3x-12)-1]+4=29|_{-4}\Rightarrow 5\cdot[2\cdot(3x-12)-1]=25|_{:5} \Rightarrow \\ \\ \Rightarrow 2\cdot(3x-12)-1=5|_{+1} \Rightarrow 2\cdot(3x-12)=6|_{:2} \Rightarrow 3x-12=3|_{+12}\Rightarrow\\ \\ \Rightarrow 3x=15 \Rightarrow x=5[/tex]

------------------------------------------------------