Posted by A.W. on Sunday, February 1, 2009 at 9:32pm.
I have two questions: first question is : [ 8(61)1][2(52)] i got 40 as my answer is this right? And second question is y +  80 an equivalent expression to (y+80)? Because I got
y +  80.

Algebra  amanda, Sunday, February 1, 2009 at 9:47pm
yes! they are both correct! good job!

Algebra  amanda, Sunday, February 1, 2009 at 9:50pm
wait! i got 45 for the 1st one

Algebra  Noether, Sunday, February 1, 2009 at 10:23pm
No, 40 is right.
[8(6  1)  1]  [2  (5  2)]
[8(5)  1]  (2  3)
40  1  (1)
40
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