Question 122116
{{{3(x-5)+2x=15}}}
{{{3(x)-3(5)+2x=15}}} Use the distributive property.
{{{3x-15+2x=15}}} 
{{{(3x+2x)-15=15}}} Group like terms.
{{{5x-15=15}}}
{{{5x(cross(-15)+cross(15))=15+15}}} Add 15 to both sides (additive inverse of -15).
{{{5x=30}}}
{{{cross(5)x/cross(5)=30/5}}} Divide both side by 5 (multiplicative inverse of 5).
{{{highlight(x=6)}}}
Check your answer. 
{{{3(x-5)+2x=15}}}
{{{3(6-5)+2(6)=15}}}
{{{3(1)+12=15}}}
{{{3+12=15}}}
{{{15=15}}}
A true statement means its a good answer.