## anonymous 5 years ago Clear fractions or decimals, solve, and check . please show work for checking. 1/2 + 4m =3m – 5/2

1. anonymous

m=-3

2. anonymous

I got the answer to the problem but i need help when checking!

3. anonymous

1/2+4(-3)=(-3)-5/2 1/2-12=-9-5/2

4. anonymous

replace m by -3 and get $\frac{1}{2}+4\times -3=3\times -3+\frac{5}{2}$

5. anonymous

to check your answer just plug in -3 for m and see if lhs = rhs

6. anonymous

$\frac{1}{2}-12=-9-\frac{5}{2}$ $-11\tfrac{1}{2}=-9-2\tfrac{1}{2}$ $-11\tfrac{1}{2}=-11\tfrac{1}{2}$

7. anonymous

shouldn't it equal 0=0

8. anonymous

no

9. anonymous

left hand side should equal right hand side , thats all

10. anonymous

If you start adding 5/2 to both sides, you are following the same logic you used when you worked the problem. This makes it less likely to catch any mistakes with your checking. You need to figure out what 1/2 - 12 is, and also what 9 - 5/2 is. Work it all the way until you have either something like 1 = 1

11. anonymous

sorry - i dont follow that

12. anonymous

okay thanks immyrep!

13. anonymous

thats ok