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3 years ago

Which of the following describes the correct process for solving the equation 2x − 4 = 20 and arrives at the correct solution?

Mathematics

2 answers:

mafiozo [28]3 years ago

5 0

Answer:

Option (A)

Add 4 to both sides, and then divide by 2. The solution is x=12

Explanation:

Add 4 to both sides, and then divide by 2. The solution is x=12

Step I: Add 4 to both sides

Adding, 2x – 4 + 4 = 20 + 4

2x = 24

Step II: Divide by 2

x = 12

Therefore, solution is x = 12

Hence, option (a) is correct

ValentinkaMS [17]3 years ago

3 0

Answer:5

Step-by-step explanation:

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2 years ago

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seropon [69]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Solve the equation. x2 = 160

Airida [17]

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2 years ago

The work of a student to solve the equation 3(2x – 4) = 8 + 2x + 6 is shown below:

Blababa [14]

If you would like to know in which step did the student first make an error and what is the correct step, you can calculate this using the following steps:

3(2x - 4) = 8 + 2x + 6
6x - 12 = 8 + 2x + 6
6x - 12 = 14 + 2x ... Step 2
6x - 2x = 14 + 12
4x = 26
x = 26/4 = 13/2

The correct result would be Step 2; 6x - 12 = 14 + 2x.

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3 years ago