toxsicity
04.02.2021 •
Mathematics
Pl help it’s for a grade I will give you if right
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Ответ:
y = 22-7z
Then substitute in the second to find z
8(22-7z) + 7z = 127
176-56z+7z = 127
-49z = -49
z = 1
So y = 22-7(1) = 22-7 = 15
y = 15; z = 1