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07-11-2020
Mathematics

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Find the value of d such that the system of equations 15x + 10y=-11 and -9x+DT=-19

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Аноним Аноним

07-11-2020

Answer:

1. 15x + 10y=-11

15x + 10y + 11=-11 + 11

15x + 10y + 11 = 0

2. -9x + DT = 19

-9x = 19 - DT

x = 19/9 + 1/9DT

x = 19/9 + 1/9DT, D∈ℝ, T∈ℝ

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