"Solution:Given 45-[4-2y-4(y-7)]=-4(1+3y)-[4-3(y2)-2(2y-5)]
45-[4-2y-4y+28]=4+12y-[4-3y+6-4y+10]
45-4+2y+4y-28=4+12y-4+3y-6+4y-10
y=-37/11
y≈-3.3636 "
Absolute Value Definition
The absolute values are the distance from the origin to the number. It is used to connect the complex numbers absolute value and the magnitudes of the vector.
We can define the absolute values like the following
{ x if x ≥ 0 }
|x| =
{ -x if x < 0 }
This is the main definition we will follow when we are writing absolute values.