Posted by Anonymous on Wednesday, November 14, 2012 at 10:48pm.
X = 1 shirt
X + 3.50 = the other shirt
2x + 3.50 = 30.50
Subtract 3.50 from both sides.
2x = 30.50 - 3.50
2x = 27
Divide 27 by 2.
x = 13.50
One shirt is $13.50.
13.50 + 3.50 = 17.00
13.50 + 17.00 = $30.50
The equation would be 2x + 3.50 = 30.50.
Basically, x represents the shirts and since there are two shirts, we multiply x by 2.
$3.50 is added because one shirt is $3.50 more than another.
Isolate the variable.
Subtract 3.50 from 30.50 which would equal 27.
Then, divide 2 from both sides so x = $13.50.
To check your work, plug everything back into the equation.
So, 2(13.50) + 3.50 = 30.50.
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