dre4232
04.02.2021 •
Mathematics
Using your knowledge of solving equations to solve the following problems.
7x-9y=1
y=-x+7
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Ответ:
-9y = -7x + 1
y = 7/9x -1/9 is the answer
Ответ:
80=5x
x=16
The two parts are 16 and 64