Question 1181300


recall:
A {{{variable}}} is a symbol for a number we don't know yet. It is usually a letter like {{{x}}} or{{{ y}}}.

A number on its own is called a {{{constant}}} (in your case {{{7}}} and {{{-3}}}.

A {{{coefficient}}} is a number used to multiply a variable (in your case {{{5x}}} means {{{5}}} times {{{x}}}, so {{{5}}} is a coefficient)

A sign used between variables and constant is {{{operator}}} (in your case operator is +).



 so, in your case  variable is {{{x}}}

answer: 2) {{{x}}}