5x-6=4(x+2)
5x-6=4x+8
5x-4x=8+6
x=14
b=baieti
f=fete
f=(3/4)*b
b+f=35
b+(3/4)*b=35 I*4
4x+3x=140
7x=140
x=140/7
x=20⇒f=(3/4)*20 (se simplifica 4 cu 20)=3*5=15
b=[tex]\sqrt{256}[/tex]
b=[tex]\sqrt{16^16}[/tex]
b=16
m.g.=[tex]\sqrt{a*b}[/tex]
=[tex]\sqrt{4*16}[/tex]
=[tex]\sqrt{64}[/tex]
=[tex]\sqrt{8^2}[/tex]
=8