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HELP!!!!!

what are you stuck on?

I don't get any of it.

can you do that?

I know THAT.
x=-y-z+12

great.

6(-y-z+12)-2y-z=16

yep

do some basic algebra to simplify... what are you left with?

two equations with two unknowns...

solve them the same way we just 'solved' for x...

solve one equation for z or y.... substitute into the other equation.

what's16-72?

good one.

never mind.

x=4 y=0 z=8

x=4,y=0 & z=8