Posted by Izzy. on Wednesday, January 4, 2012 at 10:31pm.
I SERIOUSLY need help!
Solve the linear system by using substitution.
x=64y
2x3y=1
Explanation too, please!
Please and thanks!

Math  Reiny, Wednesday, January 4, 2012 at 10:44pm
very very easy
sub x = 64y into
2x  3y = 1
2(64y)  3y = 1
12  8y  3y = 1
11y = 11
y = 1
then x = 6  4(1) = 2

Math  Izzy., Wednesday, January 4, 2012 at 10:48pm
Thank you, but:
How did you go from 128y3y to 11y?

Math  Reiny, Wednesday, January 4, 2012 at 10:56pm
12  8y  3y = 1
12  11y = 1 , that should be clear
12 12  11y = 1 12
11y = 11
divide by 11
y = 1

Math  Izzy., Wednesday, January 4, 2012 at 11:23pm
Understood. Thank you.
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