Q70. - Algebra 2

Question

Solve each equation for $\mathbf{y}$.

$\mathbf{x}+\mathbf{y}=\mathbf{9}$

Step-by-Step Solution

Answer

The required solution is $y=9-x$.

Step 1 – State the concept

An equation solved for y gives an equation where y is the only thing on the left-hand side and the other terms are on the right-hand side.

Step 2 – List the given data

The given equation is $x+y=9$.

Step 3 – Solve for y

$x+y=9$   (Given equation)

 

$x+y-x=9-x$  (Subtract x from both sides)

 

$y=9-x$   (Simplify)

 

So, the required solution is $y=9-x$.