[tex]\huge \mathbb{ \underline{EXPLANATION:}}[/tex]
▪ [tex] \bold{\: x + y + z = 20}[/tex]
[tex]\\[/tex]
◆ As we have a [tex]\small\bold{sum \: of \: three \: integers}[/tex] equal to 20 and less than 10, we know the integers have to be between 2 and 9 (1 and 0 don't apply because the sum wouldn't be equal to 20 between three integers.
[tex]\large\tt{Note:}[/tex]
The first value would be X value, second Y value and third Z value.
[tex]\huge \mathbb{ \underline{ANSWER:}}[/tex]
[tex] \large\boxed{ \sf 36 \: solution}[/tex]