Question

the perimeter of a rectangle is 78m.the width is 7m less than the length. find the length AND width.

Answer 1

P=2l+2w
and you know again that w=l-7

now hope you will can calcule it easy ,yes ?

Answer 2

not exactly, but i got so far this...hang on

Answer 3

@AriPotta hope you can calcule it for medal ,ok ?

Answer 4

78=2(l-7)+2l
782l-14+2l
78+14=92
92=4l

Answer 5

that's right, just divide both sides by four to get the answer for l

Answer 6

78=2(l-7)+2l
78=2l-14+2l
78+14=92
92=4l

Answer 7

sorry had a mistype

Answer 8

which side of what?

Answer 9

92 = 4l

Answer 10

when you divide both sides by four, what do you get?

Answer 11

88=L

Answer 12

wait no i subtratcred

Answer 13

yea, you gotta divide lol

Answer 14

subtracted* typo

Answer 15

23=L

Answer 16

yup. and since w = l - 7, and l = 23, we know that w = 23 - 7

Answer 17

which would make w = ?

Answer 18

for the length it is 23, but
about the width, being 16?

Answer 19

yea, you're right. the length is 23, and the width is 16 :)

Answer 20

ahh okay!!!thanks!!!

Answer 21

may i have a medal please?:)

Answer 22

thanks lol:)