marelinatalia2000
04.01.2021 •
Mathematics
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Ответ:
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Ответ:
See explanations
Step-by-step explanation:
The first equation is:
The second equation is
To eliminate t, Andre can multiply the first equation by -2 and the second equation by 9 to obtain:
When he adds the two equations he gets:
If Andre wants to eliminate s, he can multiply the first equation by 7 and multiply the second equation by 8 to get:
He then subtracts to get:
There are other few ways Andre can do this.
Since you have not provided the options, we can tell exactly what Andre did.