Question

Evaluate the following expression using the values given:

Find 3x - y - 3z if x = -2, y = 1, and z = -2

Answer 1

You just simply plug those numbers to the expression.
3(-2) - (1) - 3(-2)
= -6 - 1 + 6
= -1

Answer 2

thanks can you help me with this one ? Simplify the following expression:

2x - 2y + 5z - 2x - y + 3z

Answer 3

If you arrange the expression, it will look like this:
2x-2x-2y-y+5z+3z
=-3y+8z