How do you solve $- 7 x - 10 y = - 1$ $-7x - 10y = - 1$ and $x = - 7$ $x=-7$ using substitution?

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Answer 1 · 2018-01-12T00:47:35

$Y = 5$ $Y=5$

plug $- 7$ $-7$ in when you see $x$ $x$ . so $- 7 (- 7) - 10 y = - 1$ $-7(-7)-10y=-1$
from there, multiply the sevens and then divide by $- 10$ $-10$

How do you solve −7x−10y=−1-7x - 10y = - 1 and x=−7x=-7 using substitution?