Question 227343
{{{3x=27-15x}}}


Step 1.  Add 15x to both sides of the equation


{{{3x+15x=27-15x+15x}}}


{{{18x=27}}}


Step 2.  Divide by 18 to both sides of the equation


{{{18x/18=27/18}}}


{{{x=3/2}}}


Step 3.  Substitute the solution {{{x=3/2}}} into the original equation {{{3x=27-15x}}}


{{{3*3/2=27-15*3/2}}}


{{{9/2=(54-45)/2}}}


{{{9/2=9/2}}}  which is a true statement


Step 4.  ANSWER:  The solution is {{{x=9/2}}}


I hope the above steps were helpful.


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Good luck in your studies!


Respectfully,
Dr J