Question

$\frac{x+3}{2} + \frac{x+4}{3}+ \frac{x+5}{4}+ \frac{x+6}{5}+ \frac{x+7}{6}=5$

Answer 1

aducem la acelasi numitor
30(x+3)+20(x+4)+15(x+5)+12(x+6)+10(x+7)=300
30x+90+20x+80+15x+75+12x+72+10x+70=300
87x+387=300
87x=300-387
87x=-87
x=-1