Question 988088
if the difference between {{{-3}}} and a number {{{x}}} is {{{8}}}, we have:

{{{-3-x=8}}}.....solve for {{{x}}}

{{{-3-x+x=8+x}}}

{{{-3=8+x}}}

{{{-3-8=8-8+x}}}

{{{-3-8=x}}}

{{{-11=x}}}


check:

{{{-3-x=8}}}

{{{-3-(-11)=8}}}

{{{-3+11=8}}}

{{{8=8}}}