Asked by Jennifer
solve by the substitution method
5x+7y=6
-6x+y=21
5x+7y=6
-6x+y=21
Answers
Answered by
Reiny
from the 2nd ---> y = 21 + 6x
plug that into the 1st
5x + 7(21+6x) = 6 solve for x, then sub back into
y = 21+6x
plug that into the 1st
5x + 7(21+6x) = 6 solve for x, then sub back into
y = 21+6x
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