Question

If (x + y) + (2(x + y) + 3) = 9, what is x + y??

A. 3-1
B. -3 + 1
c. -3-1
D 3 + 1
E. 9-31​

Answer 1

`\boxed{\mathrm{Option \ A}}`

Explanation:

=>
`(x+y)+(2(x+y)+3)=9`

Solving the bracket

=>
`x+y+2x+2y+3 = 9`

=>
`3x+3y = 9-3`

=>
`3(x+y) = 6`

Dividing both sides by 3

=>
`x+y = 2`

A) 3 - 1 = 2 ← (Correct Answer)

B) -3+1 = -2

C) -3-1 = -4

D) 3+1 = 4

E) 9-31 = -22