<em>Answer: 24 </em>
<em>Step-by-step explanation:</em>
Equation: (1/3)x + 4 + 12 = x
Equation: (1/3)x + 16 = x
MULTIPLY EVERYTHING WITH 3
1/3 times 3 = x 16 times 3 = 48 x times 3 = 3x
Equation: x + 48 = 3x MINUS THE "X" BY 3X = 2X
Equation: 2x = 48 OR x = 24
CHECK THE EQUATION:
Sister: 8 Brother: 4 Herself: 12
8 + 4 + 12 = 24
