Solve the following equation for $x$x:

$5x+10=x+30$5x+10=x+30

$12x+19=x+85$12x+19=x+85

$9x+4=10x+2$9x+4=10x+2

$5x+2=3x+22$5x+2=3x+22

Form and solve linear and simple quadratic equations