Twice the difference of a number and 8 is equal to three times the sum of the number and 3. find the number

X=number looked for
Twice the difference of a number and 8=2(x-8)
Three times the sum of the number and 3=3(x+3)
We suggest this equation:
2(x-8)=3(x+3)
2x-16=3x+9
2x-3x=9+16
-x=25
x=-25

The number is -25 .

To check:
Twice the difference of a number and 8=2(-25-8)=2(-33)=-66
Three times the sum of the number and 3=3(-25+3)=3(-22)=-66