Question

−11 + 10( p + 10) = 4 − 5(2p + 11)
Why am I gettting 7 rather than -7?

Answer 1

Here is How I solved it...

Answer 2

-11+10(p+10)=4-5(2p+11)
-11+10p+100=4-10p-55
10p+10p=4-55+11-100
20p=-140
p=-7

Answer 3

−11 + 10( p + 10) = 4 − 5(2p + 11
-11+10p+100=4-10p-55
10p+89=-51-10p
89=-51-10p-10p
89=-51-20p
89+51=-20p
140=-20p
140/20 = p
7 =p?

Answer 4

140=-20p
140/20 = p <--- mistake appears. a negative sign is missing

Answer 5

WHen we bring it over dont we remove the negative sign

Answer 6

Because i Houhgt it becomes opposite operation

Answer 7

we will never remove negative sign.
To make it positive,
we have to multiply (-1) to both sides

Answer 8

140=-20p
140/20=-p
(-1)(140/20)=(-1)(-p)
-7=p

Answer 9

10p+89=-51-10p
89=-51-10p-10p

here when I brought the 10p over I changed it to -10p
why do I do the same to the -140 and make It positive when I bring it over

Answer 10

10p+89=-51-10p
10p+89-10p=-51-10p-10p <--- minus 10p to both sides
89=-51-20p

Answer 11

I think I got it thanks

Answer 12

you are welcome