Question

cum se calculeaxa

3*{10+2*ppd40-2**(28-3*5)ppi}-7x=51

ppd=paranteza patrata deschisa
ppi=paranteza patrata inchisa

in acest exercitiu trebuie sal aflam pa x dar eu nu stii cumm 

va roggggg!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

3*{10+2*[40-2*(28-3*5)]}-7x=51

3*{10+2*[40-2*(28-15)]}-7x=51


3*[10+2*(40-2*13)]-7x=51

3*[10+2*(40-26)]-7x=51

3*(10+2*14)-7x=51

3*(10+28)-7x=51

3*38-7x=51

114-7x=51

7x=114-51

7x=63

x=63:7

x=9