1. Find a number such that 7 times the number is 56 greater then the opposite of the number. 2. Find the greatest common factor of -24m^3n+ 32m^3n^3x-18m^2x^2n^3 3. Simplify: y^-7x^3zx^-1y^7z^-4
+118658 Please put different questions on different posts.
I have no idea what the 'opposite' of a number is...
3. Simplify: y^-7x^3zx^-1y^7z^-4
\(y^{-7}x^{3}zx^{-1}y^7z^{-4}\\ =y^{-7}y^7x^{3}x^{-1}z^{-4}z^1\\ =y^{-7+7}x^{3+-1}z^{-4+1}\\ =y^{0}x^{2}z^{-3}\\ =1x^{2}z^{-3}\\ =x^{2}z^{-3}\\ =\dfrac{x^2}{z^3}\)
