Lets get started :)
We shall plugin/substitute the value of y in all expressions
y = [tex] \frac{1}{10} [/tex]
14.7 + 3 ([tex] \frac{1}{10} [/tex]) = 15
2([tex] \frac{1}{10} [/tex]) + 14.6 = 14.8
15.5 - 5([tex] \frac{1}{10} [/tex]) = 15
17 - 3([tex] \frac{1}{10} [/tex]) = 16.7
The first and third expressions will produce a value of 15
