You can put this solution on YOUR website! 4 steps, then simplify all answers together (if possible)
1) 5x * 7y = 35xy
2) -6y*7y = -42y^2
3) 5x*8z = 40xz
4) -6y * 8z = -48yz
nothing can be simplified here so just add them all together:
35xy - 42y^2 + 40xz - 48yz
(