3p = 2p + 12subtracting 2p from both sidesp = 12 ■
2p - 9 = 5p + 12 subtract 2p fom both sides -9 = 3p +12 subtract 12 from both sides -21 = 3p divide both sides by 3 -7 = p
8-3p-4 = 2p 4 - 3p = 2p add 3p to both sides 4 = 5p divide both sides by 5 4/5 = p
Without prior knowledge of the value of q or r, it is impossible to calculate the answer to this equation.
3p +12= 7p 7p-3p=12 12?3=4 p=4
3p = 2p + 12 subtract 2p from both sides 3p - 2p = 2p - 2p + 12 1p = 12 p = 12 this is how you solve this problem.
3p = 2p + 12subtracting 2p from both sidesp = 12 ■
3p+7 = 16+2p 3p-2p = 16-7 p = 9
2p - 9 = 5p + 12 subtract 2p fom both sides -9 = 3p +12 subtract 12 from both sides -21 = 3p divide both sides by 3 -7 = p
8-3p-4 = 2p 4 - 3p = 2p add 3p to both sides 4 = 5p divide both sides by 5 4/5 = p
Without prior knowledge of the value of q or r, it is impossible to calculate the answer to this equation.
5p-1=2p-20 3p=21 p=7
3p +12= 7p 7p-3p=12 12?3=4 p=4
3p2-2p-5 = (3p-5)(p+1) when factored
6p divide by 3p = 2
4s 3p 3s 2p 1s This is probably one of the easiest chemistry problems in the book, you should probably look it up.
In 3 years Alex will be 3 times as old as his sister Precy (is now): a+3 = 3p a = 3p-3 A year ago Ales was 2 times as old as Precy (is now): a-1 = 2p a = 2p+1 3p-3 = 2p +1 3p = 2p +4 p = 4 Precy is 4 a = 2p + 1 or 3p - 3 a = 8 +1 or 12 - 3 = 9 Alex is 9