Question 804519
Problem 1:
{{{3x+1=10}}}
{{{3x+1-1=10-1}}}
{{{3x=9}}}
{{{3x/3=9/3}}}
{{{x=3}}}
Problem 2:
{{{5x+4=19}}}
{{{5x+4-4=19-4}}}
{{{5x=15}}}
{{{5x/5=15/5}}}
{{{x=3}}}
Problem 3:
{{{2t+7=-1}}}
{{{2t+7-7=-1-7}}}
{{{2t=-8}}}
{{{2t/2=-8/2}}}
{{{t=-4}}}