braidyn1018
20.05.2020 •
Mathematics
Solving by elimination
Solved
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Ответ:
x = 3
y = 6
Step-by-step explanation:
(-4x - y = -18)
2 (2x + 3y = 24)
-4x - y = -18
4x + 6y = 48
5 / 5y = 30 / 5
y = 6
-4x - (6) = -18
-4x - 6 + 6 = -18 + 6
-4x = -12
-4x / 4 = -12 / 4
x = 3
Ответ:
D.) 171
Step-by-step explanation:
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