Solving equations How do you do 2p-1=13

please can i have help im really stuck , thanks.

Answers
can some one help me please?
tpemberton
09 June 2011
p = 7
rem173
09 June 2011
yep you got it
chloe
09 June 2011
divide it by two
rem173
09 June 2011
= 2p=14
chloe
09 June 2011
so you get 2p-1 +1 = 13+1
chloe
09 June 2011
2p-1=13 so you have to start by adding 1 to both sides to get rid of the -1
chloe
09 June 2011
basicly cross over to make it positive ie 1+13=14 then 2 divided by 14 =7 so p=7
sruli1234
12 June 2011
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