Posted by alisa on Friday, May 23, 2008 at 10:43pm.
-12 + 5u= -48
add 12 to both sides
5u = -48+12
5u = -36
divide both sides by 5
u = -36/5
-12 + 5u= -48
-12 + 12 + 5u = -48 + 12
5u = -36
u = -7.2
Check it out:
-12 + (-36) = -48
-48 = -48
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