4k+mn=n-3
3(4k+mn)= 12k+mn
So, 12k+mn=n
Step-by-step explanation:
if f (x) = 100 - x;
as x increases, the value of f(x) will decrease
Multiply both sides of the second equation by 4. That will give you -4x in the second equation which when added to 4x of the first equation will eliminate x.
Second equation:
-x + 3y = 6
Multiply the second equation by 4 on both sides:
-4x + 12y = 26
There are 4 significant figures as the zero is placed between significant numbers.
