egardner4667
27.01.2021 •
Mathematics
Solve the system of equations by the addition method.
5x + 2y = 1
2x - 2y = -8
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Ответ:
(-1, 3)
Step-by-step explanation:
5x + 2y = 1
+
2x - 2y = -8
7x = -7
x= -1
2(-1) - 2y = -8
-2 - 2y = -8
-2y = -6
y = 3
Ответ:
a parallelogram