Question

solve the system.
4(3x + y) + 2z = -7
3(x - 4y + 2z) = -16
3(5 + 3x) = -4(z - 4y)

Answer 1

get all in standard form first
so
x+y+z=?

Answer 2

im not sure

Answer 3

Distribute the numbers into the parentheses first.
So for
4(3x + y) you would distribute the 4 into 3x and then into y, making it
12x + 4y

Then do that for all the parentheses

Answer 4

And for
3(x - 4y + 2z) you distribute the 3 into each coefficient, making it
3x - 12y + 6z

Can you try that for the last one?

Answer 5

I have to go so try to do that and hopefully someone else will help you with the rest

Answer 6

Did you understand the distribution?