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Evaluate the following expressions for x=7 2x-13 X+27 (5+x)/2

1 Answer

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Answer:

2x - 13: 1

x + 27: 34


(5+x)/(2): 6

Explanation:

Pre-Solving

We are given the following expressions:

  • 2x - 13
  • x + 27

  • (5+x)/(2)

And we want to evaluate them if x = 7.

To do that, we want to substitute x as 7 in each expression.

Solving

2x-13

So, for 2x - 13, substitute 7 as x.

2(7) - 13 = 14 - 13 = 1

x + 27

Substitute 7 as x.

7 + 27 = 34

(5+x)/2

Substitute 7 as x.


(5+7)/(2)

Add the numbers in the numerator together.


(12)/(2)

Divide.

6

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