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OpenStudy (anonymous):
Solve the system by substitution. 2x-y+2=-4 z=5 -2x+3y-z=-10
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OpenStudy (happykiddo):
Algebra 2?
OpenStudy (anonymous):
yea :/
OpenStudy (precal):
are you missing a z in the first equation?
OpenStudy (happykiddo):
Are you sure you wrote the problem correctly ? The second part z=5 doesn't make sense if it would x or y = 5 that would make sense because youd be using a variable the from the top part
OpenStudy (precal):
3 variables should have 3 equations........
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OpenStudy (anonymous):
thats what the question is?
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