#### Answer

The number is 6

#### Work Step by Step

"A number increased by 4" translates to x + 4.
"3 times the number decreased by 8" translates to 3x - 8.
The equation is written as:
x + 4 = 3x - 8
Solve for x.
Subtract 3x from both sides;
-2x + 4 = -8
Subtract 4 from both sides:
-2x = -12
Divide both sides by -2:
x = 6