Question 620187
{{{4x - 7 - 8x + 4 - 5x}}} group like terms (constants with constants and terms of x with terms of x)
{{{4x -8x - 5x - 7 + 4}}} group and simplify
{{{(4x -8x -5x) + (-7 +4)}}}
{{{-9x +(-3)}}}
{{{-9x - 3}}}