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File: 2018-11-09 10.38.53.jpg (339 KB, 704x907)
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What did i do wrong?
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Bump
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>>588130
So far nothing, although it would be less confusing, if you wrote in matrix.
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>>588137
Can you tell me the next steps please? This is a high school subject, i have to do it like this
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>>588130
Sum 2 bottom left equations. Let's call resulting equation 2'
Sum 2 bottom right equations. Let's call resulting equation 3'
Now use 2' to express x in terms of z. Let's call resulting equation 2''
Substitute resulting x into 3'. Compute value of z.
Substitute computed value z into 2'' to compute x.
Now substitute x and z into any of original equations to compute y.
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>>588162
4/5 in the exam, very thank
>>
Download Photomath, it has step–by–step solutions for most stuff you'll do in high school.





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