tamya12234
09.07.2019 •
Mathematics
Question: solve the system by the substitution method. y = -4x - 10 2x + 5y = -14
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Ответ:
2x+5y=-14
2x+5(-4x-10)=-14
2x-20x-50=-14
-18x=36
x= -4
y=-4(-4)-10
y=16-10
y=6
Ответ:
28
Step-by-step explanation: