algebra check please
posted by marko .
7(4  t) = 84
i got:
28  7t = 84
28 = 28
7t = 112
 
7 = 7
t = 16
is this right : 16

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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