Question

Select all of the equations that have x = 5 as a solution.

Answer 1

Answer:

B. x+11=16

C. x*2=10

Step-by-step explanation:

You have to isolate the term of x from one side of the equation.

1. 3+x=9

First, switch sides.

x+3=9

Subtract by 3 from both sides.

x+3-3=9-3

Solve.

Subtract the numbers from left to right.

9-3=6

x=6

2. x+11=16

First, subtract by 11 from both sides.

x+11-11=16-11

Solve.

Subtract the numbers from left to right.

16-11=5

x=5

3. x*2=10

First, divide by 2 from both sides.

$\sf{\dfrac{x*2}{2}=\dfrac{10}{2} }$

Solve.

Divide the numbers from left to right.

10/2=5

x=5

4. 5*x=15

First, switch sides.

x*5=15

x*5=5x

5x=15

Divide by 5 from both sides.

5x/5=15/5

Solve.

Divide the numbers from left to right.

15/5=3

x=3

• Therefore, the correct answer is "B. x+11=16 and C. x*2=10".

I hope this helps, let me know if you have any questions.