2x; 5x; 9x
2x; 7x; -8x
5xy; 3x; 4xy
6x; 8y; 4y
3y; 5y; x
8z; 3xy; 12z
\(5m^2n^3; 9m^2n^3; 2n^3m^2\)
10x; 4y
6z; 4z; 2z
\(3x^2; 5x^2; 4y^2 \)
