The expressions that are equal to y are:
[tex]\frac{1}{3}y + \frac{2}{3}y[/tex]
[tex]12y - 11y[/tex]
[tex]-7y + 8y[/tex]
Solution:
We have to find the expressions that are equal to y
Option 1:
[tex]5(\frac{1}{2}y) = \frac{5y}{2}[/tex]
So this expression is not equal to "y"
Option 2:
[tex]4 - 3y[/tex]
So this expression is also not equal to "y"
Option 3:
[tex]\frac{1}{3}y+\frac{2}{3}y = \frac{y}{3} + \frac{2y}{3} = \frac{y + 2y}{3} = \frac{3y}{3} = y[/tex]
Thus this expression is equal to y
Option 4:
[tex]12y - 11y = 1y = y[/tex]
Thus this expression is equal to y
Option 5:
[tex]-7y + 8y = 1y = y[/tex]
Thus this expression is equal to y
Option 6:
[tex]y(0) = 0[/tex]
So this expression is also not equal to "y"
