26.3k views
3 votes
7=1/3(8x+3)
Solve for x in simplest form

User LITzman
by
5.4k points

2 Answers

4 votes
The answer is 9/4 or 2 1/4

You multiply the parentheses by 1/3

7 = 8/3x +1

Then multiply both sides by 3

21 = 8x+3

Move terms

-8x= 3-21

Calculate

-8= -18

Divide both sides by -8

x= 9/4 or 2 1/4
User Gribesh Dhakal
by
5.4k points
4 votes

Answer:

x=2 1/4

Explanation:

Let's swap it around so its 1/3(8x+3)=7

Now you multiply both sides by 3 to make it 1(8x+3)=21

That means its 8x+3= 21

Subtract both sides by 3 to get rid of it

Now you have 8x=18

Which equals to x= 18/8

Which equals 2 1/4

User Strawtarget
by
4.6k points