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Mnenie [13.5K]
3 years ago
15

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

Mathematics
1 answer:
seraphim [82]3 years ago
5 0

Answer:

In step 3

4m = 4 + 4n

-4m = -32 -8n. (step 2)

If you add -4m, 4m you end up with

-4m+4m=-32 -8n + 4n +4

In step 3. the 4 was not added

continuing to solve 4n=-28, n=-7

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