Question

solve this -5-4x+7x=1

Answer 1

-5+3x=1
3x=1+5
3x=6
x=6/3
x=2

Answer 2

how did u get that? do i have to add 4x and 7x?

Answer 3

You have -4x and +7x.

Answer 4

So if you have 7 x's and you take 4 away, how many x's do you have?

Answer 5

yeah or is it suppose to be sqrd?

Answer 6

its not negative 4! it is positive 4x

Answer 7

-5-4x+7x = -5 + (-4x) + 7x

Answer 8

negative 5 minus 4x plus 7x equals 1

Answer 9

Yes, but subtracting 4x is the same as adding negative 4 x.

Answer 10

so everytime you have a number and a variable, u have to subtract it?

Answer 11

No

Answer 12

If I say -5 - 4 + 7 isn't that the same as -5 + -4 + 7?

Answer 13

yea! !

Answer 14

So -5 - 4x + 7x = -5 + (-4x) + 7x

Answer 15

-5-4x+7x=1
-5-11x=1
-5 -5
11x=-4
4 4

Answer 16

no

Answer 17

show me how u did it

Answer 18

7x + -4x is not -11x

Answer 19

its not negative 11! its positive 11x!

Answer 20

You are fundamentally not understanding addition and subtraction with regards to positive and negative numbers. Please review this material either in your book, or via the khanacademy.org videos.

Answer 21

x=2