Question 1144302
<br>
Carefully convert the given information into algebraic expressions.<br>
The number you are looking for is her brother's age; let that be the variable x.
x = brother's age<br>
"the sum of her brother's age and 6": x+6<br>
"half the sum of her brother's age and 6": (x+6)/2<br>
Her age (9) is half the sum of her brother's age and 6:<br>
{{{9 = (x+6)/2}}}<br>
Solve using basic algebra.