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5 votes
Trying to work out this problem. can't find out what x is.

0.5(−2.5x − 4.7) = 16.9

2 Answers

4 votes

Answer:

x = -15.4

Explanation:

0.5(−2.5x − 4.7) = 16.9

you wanna distribute 0.5 to both numbers in the parenthesis

-1.25x - 2.35 = 16.9

now you wanna add 2.35 to both sides of the equation

-1.25x = 19.25

now you wanna divide -1.25 from 19.25

x = -15.4

hope that helps :))

User Akku
by
6.6k points
1 vote
So here you first want to open up the parenthesis by using the distributive property. (Is that what it's called)

So basically multiply each and every number by 0.5.

So 0.5 * -2.5x - 0.5 * 4.7 = 16.9

Is what you get after doing that.

And then just multiply the numbers

So

-1.25 * x - 2.35 = 16.9

Add 2.35 to both sides

-1.25 * x = 19.25

And then divide both sides by -1.25 to get

x = - 15.4

So there's your answer.

(Sorry I took so long btw)
User Andrew Plummer
by
6.2k points
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