phouattara phouattara

17-09-2020
Mathematics

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y=-2x-3 and 7x-5y=-6. solve by substitution

Respuesta :

meredith48034 meredith48034

18-09-2020

Answer:

Step-by-step explanation:

y = -2x - 3

7x - 5y = -6

7x - 5(-2x - 3) = -6

7x + 10x + 15 = -6

17x = -21

x = -21/17

y = -2(-21/17) - 51/17

y = 42/17 - 51/17

y = -9/17

(-21/17, -9/17)

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