if 5xy^2z+a=7xy^2z, then what expression in terms of x,y, and z must the variable "a" be equivalent to?
I think you want to solve for a .
5xy2z + a = 7xy2z
Subtract 5xy2z from both sides of this equation.
a = 7xy2z - 5xy2z
Combine like terms.
a = 2xy2z
Thank You, I hope it is right!