What is the resulting equation when the expression for y in the second equation is substituted into the first equation?
2 answers:
Take the second equation already set to y and substitute it into the first equation for y...
3x + (6 - 4x) = 1 ... now we simplify
3x + 6 - 4x = 1 .....now combine like terms
-x + 6 = 1 .....
Y=6-4x
sub 6-4x for y
3x+y=1
3x+(6-4x)=1
3x+6-4x=1
3x-4x+6=1
-x+6=1
3rd option
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