Question 969891

{{{6x}}} plus {{{3}}} equals {{{45}}} means

{{{6x+3=45}}}....solve for {{{x}}}; means isolate {{{x}}} on one side of equal sign 

{{{6x+3-3=45-3}}}

{{{6x=42}}}......both sides divide by {{{6}}}

{{{6x/6=42/6}}}

{{{x=7}}}