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3 years ago

Given that

Mathematics

2 answers:

svetoff [14.1K]3 years ago

4 0

Answer:

-7

Step-by-step explanation:

To find x, substitute the values and solve.

R = 2x + 9y

It becomes:

2x + 27 = 13

Rearrange and solve

2x = -14

x = -7

Hope this helps

trasher [3.6K]3 years ago

3 0

Answer:

x=-7

Step-by-step explanation:

We are given the expression:

R=2x +9y

We want to find x when R=13 and y=3. Therefore, we must substitute the numbers in for the variables.

13=2x+9(3)

Multiply 9 and 3.

13=2x+27

Now we must solve for x by isolating x on one side of the equation.

27 is being added to 2x. The inverse of addition is subtraction, so subtract 27 from both sides.

13-27=2x+27-27

13-27=2x

-14=2x

x is being multiplied by 2. The inverse of multiplication is division, so divide both sides by 2.

-14/2=2x/2

-14/2=x

-7=x

x=-7

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Neporo4naja [7]

Answer:

Step-by-step explanation:

Alright, lets get started.

Please refer the diagram I have attached.

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