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3 years ago

What is the solution for this problem 3p-1=5(p-1)-2(7-2p)

Mathematics

2 answers:

qwelly [4]3 years ago

4 0

______________

3p-1=5(p-1)-2(7-2p)

3p-1=5p-5-14+4p

3p-1=9p-19

6p=18

p=18/6

p=3

____________

kupik [55]3 years ago

4 0

3p-1=5(p-1)-2(7-2p)

multiply the first bracket by 5

(5)(p)=5p

(5)(-1)=-5

multiply the second bracket by -2

(-2)(7)=-14

(-2)(-2p)=4p

3p-1=5p-5-14+4p

3p-1=5p+4p-5-14 ( combine like terms)

3p-1=9p-19

move 9p to the other side

sign changes from +9p to -9p

3p-9p-1=9p-9p-19

-6p-1=-19

move -1 to the other side

-6p-1+1=-19+1

-6p=-18

divide both sides by -6 to get p by itself

to get +p

-6p/-6=-18/-6

Answer:

p=3

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