Need help learning to solve this

Question

5x/3+6=1/4

 

 

5x-6/3+x/21+x/7-9

Answer 1

The first concept you want to remember with this problem is order of operation.

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

 

5x/3+6= 1/4

 

So, first step is to add 3+6 = 9

 

Next, to get x by itself we would multiply 9 on both sides 

( 5x /9) 9 = 9 (1/4)

 So, 5x = 9/4

 

Next, divide both sides by 5 to cancel that out 

5x/ 5 = (9/4)/ 5

 

Next multiply (9/4)/5  × 5/1 because a fraction cannot be divided again so we multiply the denominator by its reciprocal to get rid of it and what we do at the bottom we have to do on top.

 

So we have x = 45/4

 

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