3 years ago

How do you solve this system by substitution. Y= -5x+3 -x-7y=13

1 answer:

3 0

A) Y= -5x+3
B) -x -7y = 13 substituting equation A) into B)
B) -x -7*(-5x +3) = 13

B) -x +35x -21 = 13
B) 34x = 34
x = 1

A) Y= -5*1 +3
A) Y= -2

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