what does [2-4] mean? how do i simplify 2x + [ 2 - 4] +3(-4 +5x)?

Answer 1

2 - 4 = - 2
2x - 2 - 12 + 15x
17x - 14

Answer 2

"it means 2 minus 4. the brackets tell you to simplify inside them before you combine the answer with anything else"
That's a stupid system, why not just use paranthesis?

I'd say go with Geeks answer, since you use bars (" |2-4| ") for absolute values, not brackets. That is, treat it as a range and answer for all possible values of it. If it's easier to understand, look at it this way:

2x + y + 3(-4 + 5x)
Where y is anything between 2 and 4

Answer 3

It looks like a range of values. Like 2-->4

2x + [2-4] + 3(-4+5x)
2x + [2-4] -12 +15x
17x + [8-10]

Answer 4

The absolute value of 2 - 4 which is 2

2x + 2 - 12 + 15x = 17x - 10

Answer 5

this is the siric like
......,-3 ,-2 ,-1, 0 ,1 ,2 ,3......
so we can do this type of substrection
if we do 4-2 then its answer is 2
same way we substrect 2-4 we get -2
2x+[2-4]+3(-4+5x)
=2x-2-12+15x
=2x-14+15x
=17x-14
youe answer is 17x-14
if you can not understand then see the anothar exampal,
6-3=you know it is 3
this type 3-6= -3
it must be -
remember this whole life

Answer 6

=[2-4]
=[-2]
=[2]
therefore, [ ] means absolute, so the value in the bracket must be a positive value

=2x+[2]-12+15x
=2x+15x+2-12
=17x-10

Answer 7

not sure.., but seems that [2-4] means 2 TO 4 and since it is ni brackets that means 2 & 4 also included,,SO [2-4] =2,..(all numbers between)..,4.

I think this is a Limits equation,, you need to solve this [2-4] first then you can solve the full equation,,

Answer 8

it means 2 minus 4. the brackets tell you to simplify inside them before you combine the answer with anything else

Answer 9

2x + (2 - 4) + 3(- 4 + 5x) = 0
2x + (2 - 4) - 12 + 15x = 0
(2 - 4) = -12 - 2x - 15x
(2 - 4) = -12 - 17x

Answer 10

2x+[-2]+3*(-4+5x)
2x+[-2]-12+15x
17x-14