Question

Which expression is equivalent to 9x – 3y – 5x + 7y + x + y? A. 5x2 + 4y2 B. 4x + 4y C. 5x + 5y D. 10xy

Answer 1

Option C -
`9x-3y-5x+7y+x+y=5x-5y`

Explanation:

Given : Expression
`9x-3y-5x+7y+x+y`

To find : Which expression is equivalent to given expression?

Solution :

Step 1 - Write the expression,

`9x-3y-5x+7y+x+y`

Step 2 - Add like term together,

`=9x-5x+x-3y+7y+y`

Step 3 - Solve,

`=5x-5y`

Therefore, The correct option is C.

`9x-3y-5x+7y+x+y=5x-5y`

Answer 2

9x – 3y – 5x + 7y + x + y

9x-5x+x -3y+7y+y

x(9-5+1) +y(-3+7+1)

5x+5y

Choice C