The equation is 5= -z - 3
Why is the answer -8 and not just positive 8? Please explain the whole negative variable thing.
5= -z - 3
add +z to both sides
5+z = -z + z - 3
5 + z = -3
subtract 5 from both sides
5+z - 5 = -3 -5
z = -8
Why is the answer -8 and not just positive 8? Please explain the whole negative variable thing.
add +z to both sides
5+z = -z + z - 3
5 + z = -3
subtract 5 from both sides
5+z - 5 = -3 -5
z = -8