4^(12-4x)=256 realize that 256 is 4^4 so we really have:
4^(12-4x)=4^4 taking the natural log of both sides
(12-4x)ln4=4ln4 dividing both sides by ln4
12-4x=4 subtract 12 from both sides
-4x=-8 divide both sides by -4
x=2
(13/20)=(x/152)
1976=20x
x=98.8
About 99 have dogs
So here. I don't know how to explain so-
we have given an expression
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we have given the value of x,y and m .
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we need to find the value of expression mx-y.
we need to plug the respective values and solve.
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7 is the value of expression mx-y.