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September 22, 2014

September 22, 2014

Posted by **Billy** on Wednesday, October 1, 2008 at 11:17pm.

- math -
**Anonymous**, Wednesday, October 1, 2008 at 11:29pmmove similar terms to one side.

-4c=4c+32

then subtract 4c to both sides.

-8c=32

then divide both sides by -8.

c=-4

- math -
**DrBob222**, Wednesday, October 1, 2008 at 11:35pm-4c-11=4c+21

move constants to one side and variables to the other.

add -21 to both sides and add +4c to both sides.

-4c+4c-11-21 = 4c+4c+21-21

-11-21 = 8c

combine terms

-32 = 8c

divide both sides by 8

-32/8 = 8c/8

-4 = c

Check my work. I always check the answer, too, by substituting into the original. In this case we have

(-4*-4) - 11 = (4*-4)+21

+16-11 = -16+21

+5 = +5

GOOD. It checks.

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