Posted by marko on Monday, October 1, 2012 at 9:46pm.
Here's your mistake:
7t = -112
It should be
-7t = -112
t = +16
oh ok i see thanks can you check another:
-5.5 (8+b) = -33
i got:
-44 + -5.5b = -33
+44 +44
__________________
-5.5b = 11
___________
- 5.5 = 5.5
b = -2
Right!
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