The difference of two numbers is three their sum is 13 find the number

The two numbers are 5 and 8

Step-by-step explanation:

x-y =3

x+y =13

We can use elimination to solve

x-y =3

x+y =13

2x = 16

Divide by 2

2x/2 = 16/2

x = 8

Now we need to find y

x+y =13

8+y =13

Subtract 8 from each side

8-8+y =13-8

y = 5

answer: -1

step-by-step explanation:

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.