emily0981
23.04.2020 •
Mathematics
X = 10
5x − 4y = 18 substetution need fast
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Ответ:
Explanation:
X = 10
5x - 4y = 18
5(10) - 4y = 18
50 - 4y = 18
50 - 4y = 18
-50 -50
-4y = -32
-4y/-4 = -32/-4
y = 8
Ответ:
c
Step-by-step explanation: