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

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Answer 1 · 2018-01-12T00:47:35

$Y=5$

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

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