Lets solve for and
___________
-
now lets place our equation
, since we can substitute for
and since we said we get that
Explanation:
y = 6x
so,
4x + y = 7
or, 4x + 6x = 7
or, 10x = 7
so, x = 7/10
Now,
y = 6x = 6 * 7/10 = 21/5
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