Question

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

Answer 1

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