Question

Add the equations 5x - y = -1 and -5x + 3y = 25

Answer 1

B.
`2y = 24`

Explanation:

Given the addition of equations:

`\text{ }\ \, \left(\frac{}{}5x \ \ - y \ \: = -1\frac{}{}\right) \\ \underline{+ \left(\,-5x + 3y = 25\ \frac{}{}\right)} \\`

We can add each column of like terms (
`x`s,
`y`s, and constants).

• 
  `5x + (-5x) = 0`
• 
  `-y+3y=2y`
• 
  `-1 + 25 = 24`

Showing these in equation form:

`0 + 2y = 24`

A.
`\boxed{2y = 24}`