negritoboy014
10.01.2020 •
Mathematics
Solve the linear system 5x-5y=15
-7x+5y=-27
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Ответ:
4x
Step-by-step explanation:
5x - x is simply
5x - 1x = 4x
Another way to think about it:
5x = 5 * x
5(x) - 1(x) = 4(x) = 4x
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-Chetan K