Question 921510


let a number be {{{x}}}

given:

{{{x}}} subtracted from {{{78}}} equals {{{60}}}:

{{{78-x=60}}} ...........solve for {{{x}}}

{{{78-x+x=60+x}}}

{{{78=60+x}}}

{{{78-60=60-60+x}}}

{{{78-60=x}}}

{{{18=x}}}