Chapter 7.3, Problem 19HP

To determine

Find the linear expression would you add to $-4y+2$ have a sum of y.

Answer to Problem 19HP

  $5y-2$

Explanation of Solution

Given:

Sum is y

Concept Used:

To get the required linear expression, we need to subtract $-4y+2$ from y.

The required expression: $y-(-4y+2)$

Calculation:

The required expression: $y-(-4y+2)$

  $\begin{array}{l}y-(-4y+2)\\ y+4y-2[-(-4y)=+4y\text{and}-(+2)=-2]\\ 5y-2\end{array}$

The required expression is: $5y-2$ when we added with $-4y+2$ , will get the sum as y.

Thus, the required expression is: $5y-2$ when we added with $-4y+2$ , will get the sum as y.