If I double a number and add 4 to it and the answer is 22 , what was the number?

Answer 1

9.

Answer 2

On an algebra test, you should start from the beginning, like this:

Let x = a number

2x + 4 = 22

Double a number means multiplying it by 2.
Add 4 means writing + 4.
Usually the term "is" means equal to, or =

Now subtract 4 from both sides, in order to get the x term by itself. This way you can solve it.

2x + 4 - 4 = 22 - 4

2x = 18 Divide both sides by 2 to find x

x = 9

Check your answer by substituting 9 back into the original equation:

2(9) + 4 = 22 ?
18 + 4 = 22
22 = 22 check complete

Answer 3

9

Answer 4

9

Answer 5

9

cause 9 plus 9 equals 18 then you add 4 and u get 22

Answer 6

you attempt to scientific safeguard x interior of here equation in keeping with the query: 2(x + 3) = 22 conveniently use elementary algebra to sparkling up for x. 2(x + 3) = 22 Divide the two components by ability of utilising 2 x + 3 = 11 Subtract 3 from the two component. X = 8. for this reason, 8 is the selection. look at you respond. in case you upload 3 to eight, you get 11. in the progression you double the result, you get 22.

Answer 7

2(X)+4 = 22
2(X) = 22-4
X = 18/2
X = 9 #

;) .......

Answer 8

2 n + 4 = 22
2 n = 22 - 4
2 n = 18
n = 18 / 2
n = 9

Answer 9

Take this question in reverse order, you don't even need the algebra.

Start with 22
Take away 4 = 18
Divide by 2 = 9

Answer 10

Let number be x

Double number = 2x
Add 4 = +4
2x + 4 = 22
2x=18
x=18/2
x=9

Best of luck !!

Answer 11

2y + 4 = 22
2y = 22 - 4
y = 18 / 2
y = 9