Nifal earned 9$ for washing two cars .He recived $1 more for the second car. How much was he paid for washing each car?Which two numbers have a sum of 9$?

Nifal received $ 4 for washing the first car.

Nifal received $ 5 for washing the second car.

4 and 5 have a sum of 9.

Step-by-step explanation:

The problem can be rewritten as follows: Find the sum of two consecutive entire numbers equal to 9. That is:

Then, by eliminating y:

Now, let is clear :

Nifal received $ 4 for washing the first car.

The earning for the second car is: ()

Nifal received $ 5 for washing the second car.

4 and 5 have a sum of 9.

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation:

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right