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Which equation is equivalent to __________

Which equation is equivalent to __________-example-1

1 Answer

4 votes

(2x)/(3) - (5)/(6) = (-5x)/(12) + (1)/(4)

<< Equate all the denominators with a ^minimum^ common number(12).


= (4.2x)/(12) - (5.2)/(12) = (-5x)/(12) + (3)/(12)

<< Classify same terms to one side. The fraction that you threw to other side in the equation changes.


= (8x+5x)/(12) = (3+10)/(12)

(13x)/(12) (13x)/(12)
13x=13
x=13/13
x=1

So the main equation's solution set is 1.

Let's look at the options then!

1:
(-5)/(6) = (x)/(4) + (1)/(4)
**equate denominators
=
(-5)/(6) - (1)/(4) = (x)/(4)
=
(-10-3)/(12) = (3x)/(12)
=
-13=3x
x=
(-13)/(3)


2:
(2x)/(3) =(-5x)/(12) - (-7)/(12)

8x= -5x-7

**throw -5x left of the equation.


13x=-7
x=
(-7)/(13)


3:
(x)/(4) - (5)/(6) = (-1)/(4)

3x-10=3
3x=7
x=7/3


4:
(2x)/(3) - (13)/(12) = (-5x)/(12)
8x-13= -5x
13x=13
x=1

The correct answer is 4.
Hope it helps!
#MissionExam001