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AS Mathematics

Hi, I'm just doing some prep ready to start AS Maths in September. I'm doing some questions my school sent me, however I've got stuck on a linear equation which should be fairly easy for me... :angry:

Could anyone show me how to solve:

2p - (p-2) = 3p - 7

I would be very grateful, it's the negative after the 2p that is confusing me!

Thanks,

Bradley

Reply 1

Anythingoo1

do you understand that -(p - 2) = -p + 2 ? (expand out the brackets and a double negative makes a positive)

so then 2p - p + 4 = 3p - 7

=> 2p = 11

=> p = 5.5

Reply 2

LoveLifeHate

Original post by Anythingoo1

do you understand that -(p - 2) = -p + 2 ? (expand out the brackets and a double negative makes a positive)

so then 2p - p + 4 = 3p - 7

=> 2p = 11

=> p = 5.5

Sorry but why have you suddenly changed the 2 to a 4