Do you multiply when you have an x right after a math number like this: 3x+4x= what would it equal?

3x+4x=7x

Step-by-step explanation:

basically 3x+4x means 3*x+4*x

thus, we can take x out as a common factor of both

x(3+4)= x*7=7x

or

you can sum the variables with the same element (x is our element in here)

thus,

3x+4x=7x

if it would be 3x+4y you cannot sum them since the elements are different (x and y)

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|