Question

If 20 is added to a number the result is the same as 55 decreased by four times the number.Find the number. Help me If 20 is added to a number the result is the same as 55 decreased by four times the number.Find the number. Help me @Mathematics

Answer 1

20+x=55-4x

Answer 2

setup an equation with simple algebra. The "unknown" = the "number."

Answer 3

is this correct?

Answer 4

Yep that's right.

Answer 5

thanks

Answer 6

can you solve those together? there are a few techniques for this.

Answer 7

let me see

Answer 8

20=55-3x

Answer 9

75=-3x

Answer 10

not quite. to get rid of the x on the left, subtract x to both sides.

-4x - (1)x = -5x

Answer 11

same with the 55.

Answer 12

75=-5x

Answer 13

what about:

25 - 55 = ?

Answer 14

isn't 20

Answer 15

subtract 55

Answer 16

it's a negative number.

Answer 17

?????????

Answer 18

20 - 55 = -35

Answer 19

you have to subtract 55 from both sides.

Answer 20

where did you get -35

Answer 21

20 - 55 = 20 + -55 = -55 + 20 = -35

Answer 22

-35=-5x

Answer 23

that's right.

Answer 24

x=7

Answer 25

ty sir?

Answer 26

booyah.

Answer 27

lol