Register
Hello I no the x=8 but how do I check it?
153k views
3 votes
Hello I no the x=8 but how do I check it?

Hello I no the x=8 but how do I check it?-example-1
User Arvinq
by
3.6k points

1 Answer

5 votes

Given

x + 4 + 2x = x + 20

First collect like terms

x + 2x - x = 20 - 4

2x = 16

Next, divide through by 2

x = 16/2

x = 8

To check your answer, substitute 8 as x in the equation.

If both side of the equation are equal, hence, the solution is x = 8.

x + 4 + 2x = x + 20

8 + 4 + 2(8) = 8 + 20

8 + 4 + 16 = 28

28 = 28

Hence, x = 8

Final answer

x = 8

User Hernando
by
4.1k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

3.7m questions

4.8m answers

Other Questions

A study was completed in Florida. In southern Florida, the study involved 3,000 patients; 54% of them experienced flulike symptoms during the same month. The study had a margin of error of 1.8%. What does
Solve for x in the equation 3 x squared minus 18 x + 5 = 47. (I need this to be an answer like X=3+\_ square root 23)
Please answer asap.......... ...
Can someone help me plz I have to Turn 27/9 in simplest
The sanchez family goes out for dinner, and the price of the meals is $60. The sales tax on the Meals is 7 percent, and they also want to leave a 15 percent tip. What is the total cost of the meal? Analyze
Link Copied!