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Ket [755]
3 years ago
5

The work of a student to solve a set of equations is shown:

Mathematics
1 answer:
kykrilka [37]3 years ago
6 0
Error in step 2

<span>Step 2: –7y = 16 – 2z [Equation A in Step 1 is simplified.]
(forgot to multiply -7 on the right side)

should be
</span><span>Step 2: –7y = -112 + 14z [Equation A in Step 1 is simplified.]</span>
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Answer:

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Step-by-step explanation:

First you would line up the equations so the x's and y's are on top of each other. Then you would multiply x+y=14 by 3 to give you 3x+3y=42. After that you subtract 2x-3y=30 and 3x+3y=42 to give you an answer of x=12. After that, you plug in x with 12 in the equation x+y=14. You subtract 12 from both sides to get an answer of 2. So ur solution is (12,2)

   

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