Search 75,753 tutors
FIND TUTORS
Ask a question
0 0

-3/2=-2a+1

Tutors, please sign in to answer this question.

4 Answers

- 3/2 = - 2a +1
cross multiplyimg both side we'd have
 
( -3 * 1) = 2 ( -2a + 1 )
which gives;
 
-3 = -4a + 2
moves 2 over the equality sign and it become -2
we'd then have
 
-3 - 2 = -4a
which gives 
 
-5 = -4a
 
solving for a, divide both sides by -4
we'd have 
 
-5 / -4 = -4a / -4
giving
 
5/4 = a
 
Hi Ellie,
 
-3/2=-2a+1
subtract -1 to both the sides
 
-3/2-1=-2a+1-1
-3/2-1=-2a
 
-3/2-2/2=-2a
-5/2=-2a
 
multiply  by 1/-2 on both the sides to solve for a
 
(-5/2).1/-2=(-2a).1/-2
 
5/4=a 
 
 
(-3/2)=-2a+1
(-3/2)-1=-2a+1-1
(-5/2)=-2a
5/2=2a
(5/2)/2=2a/2
(5/2)(1/2)=a
5/4=a
Hi Ellie;
-3/2=-2a+1
Let's get rid of the annoying fractions.
Let's multiply both sides by 2...
2(-3/2)=2(-2a+1)
-3=-4a+2
Let's subtract 2 from both sides...
-2-3=-4a
-5=-4a
Let's divide both sides by -4...
-5/-4=(-4a)/(-4)
A negative number divided by a negative number has a positive result...
5/4=a
Let's check our results...
-3/2=[(-2)(5/4)]+1
-3/2=(-10/4)+1
-3/2=(-5/2)+1
Let's note the fact that 1=2/2
-3/2=(-5/2)+(2/2)
All the denominators are the same.  These cancel...
-3=-5+2
-3=-3