Question 255356
{{{25n-(-15n-4)=28n}}}
step 1 - distribute the negative through to get
{{{25n + 15n + 4 = 28n}}}
step 2 - combine like terms on the left to get
{{{40n + 4 = 28n}}}
step 3 - subtract 40n from both sides to get
{{{4 = -12n}}}
step 4 - divide to get
{{{n = -1/3}}}