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If 40 - x < 3x, then the solution is....
A. x < 20
B. x > 20
C. x > 10
D. x < 10
Thanks!

2 Answers

3 votes
Solutions for 40 - x < 3x

To find the answer we have to solve the equation 40 - x < 3x.

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1) The first step is to add x to each side
40 < 3x+x

2) Next you s
implify 3x+x. To simplify 3x+x you add the x to 3. 3x+x = 4x
40 < 4x

3)
Divide both of the sides by 4

(40)/(4) < x

4)
Simplify the fraction
(40)/(4) to 10. You simplify it to ten because 40 ÷ 4 = 10.
10<x

5) Answer
x= > 10

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Now lets see the Choices
The correct choice is C.

x > 10

User Michael Tabolsky
by
8.9k points
3 votes
40 - x < 3x

Simplify both sides of inequality:

−x + 40 < 3x
Subtract 3x on both sides:

−x + 40 3x < 3x 3x4x + 40 < 0

Divide both sides by -4:

-4x/-4 < -40/-4

x > 10

C. x > 10
User Vikram Bodicherla
by
7.7k points

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