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Answer:
(x, y) = (7, -1)
Step-by-step explanation:
The expression for x makes it easy to use that for substitution.
3(-7y) +y = 20
-20y = 20 . . . . . collect terms
y = -1 . . . . . . . . . divide by -20
-7(-1) = x = 7 . . . use y in the second equation to find x
The solution is (x, y) = (7, -1).
Answer:

Step-by-step explanation:

by multiplying

Answer:
dad
Step-by-step explanation:
dad
Answer:
NAH FAM- I GOTCHU
RATATATA-
YA LIFE IS A LIE~
JFAIOSDHFAIOSDHFSJD~
FAISDEJHFIAJDE~
WOOOOOOOOOOOOOOOOOOOOOOOOOOO
Step-by-step explanation:
Answer:
20 + 0i
Step-by-step explanation:
(10 + 5i) + (10 - 5i) = 20 + 0i