Homework Help: algebra

Posted by Kay. on Saturday, September 12, 2009 at 11:21am.

Solve and proof for the value of A.
0.3A+(0.2A-0.5)+0.2(A+2)=1.3

I have done this question over and over I keep getting answers like 2 or3.25 but when I sub in thoes answers for A It does not work.

algebra - bobpursley, Saturday, September 12, 2009 at 11:33am
A(.3+.2+.2)-.5+.4=1.3
.7A-.1=1.3
.7A=1.4
A= 2

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