Answered

the difference of 21 and a number

21-x or x-21​

Sagot :

ItsSolomonviz

[tex]\small\sf\red{21 - x}[/tex]

Because 21 is first variable in EQUATION.

[tex]\small\sf\red{Chuenzy \: always \: willing \: to \: help \: you✓}[/tex]