A student chose a number, multiplied it by 3, then subtracted 138 from the result and got 102. What was the number he chose?	Choose the correct answer:	A) 80	B) 120	C) 130	D) 140	E) 150
Solution:   Let xx be the number he chose, then   3⋅x−138=102   3x=240   x=80   80nswer 80
<result>A</result>
A student chose a number, multiplied it by 3, then subtracted 138 from the result and got 102. What was the number he chose?