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Chapter 2: Q28. (page 99)

Solve the equation. Check your solution.

7x-3x=24

Short Answer

Expert verified

Solution of given equation is x=6.

Step by step solution

01

Step-1- Solve the equation for x

7x-3x=24

On simplifying, we get

4x=24

Dividing with 4on both sides, we get

4x4=244x=244x=6

x=6

02

Step-2-Verification of our solution

For checking our answer, substitute x=6 in given equation 7x-3x=24.

On substituting, we get

7x-3x=247×6-3×6=2442-18=2424=24

03

Step-3- Conclusion

Here, as both sides above expression are equal, our answer is true.

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Most popular questions from this chapter

ant Pumpkins A giant pumpkin can be difficult to weigh directly on a scale. To estimate the weight, you can first measure the distances a, b, and c (in inches) as shown below. The weight W (in pounds) can then be approximated using the formula W  =  1.9  (  a+b+c).

a. Use the distributive property to write the given formula without parentheses.

b. For a certain pumpkin, a  =  132inches, b  =  91inches, and c  =  85 inches. Approximate the weight of the pumpkin to the nearest pound

Use the distributive property to write an equivalent variable expression.

3 (  y  +  9  )

In Exercises 1–3, evaluate the expression. Justify each of your steps.

8(−3)(5)

In Exercises 1–3, evaluate the expression. Justify each of your steps.

3.4+9.7+7.6

There are 30 teams in the National Basketball Association (NBA). Each team can have a maximum of 12 healthy players plus 3 players on injured reserve. Use the distributive property to find the maximum number of players who can be in the NBA.
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