Question 349861
{{{55x-3(9x+12)=-64}}}   <--- Original equation
{{{55x-27x-36=-64}}}   <--- Distributed -3 to the numbers in the parentheses
{{{28x = -28}}}   <--- Combine like-terms
{{{x=-28/28}}}   <--- Isolate X
{{{highlight(x = -1)}}}  <--- Answer