Question

Como ficaria isso?! 7x/4+70=3x+20

Answer 1

$\frac{7x}{4} +70=3x+20\to ~~mmc=4\\\\7x+280=12x+80\to \\\\ 7x-12x=80-280\to \\\\ -5x=-200~(-1)\to \\\\ 5x=200\to\\\\ x= \frac{200}{5} \to \\\\ \boxed{x=40}$