math
posted by Anonymous on .
For what values of a and b are the following equations both true?
a+2b=1
3a8b=1

multiply all terms in first equation by 4
+4a+8b = 4
3a8b = 1 now add

1a+0b = 5 or a = 5
so use 5 for a in equation 1
5 + 2b = 1
2 b = 4
b = 2