rezolvati in r ecuatia x-2/5+x+1/2+=3

Răspuns :

x-2/5+x+1/2=3⇔2(x-2)+5(x+1)=30⇔2x-4+5x+5=30⇔7x+1=30⇔7x=30-1⇔7x=29⇔x=29/7⇔x=4,14
R:x=4,14.