1) -2,3x*4
2) 9y*(-3)
3) 5,2x*(-2)
4) 2/3y*6

1) - 9,2x
2) -27y
3) -10,4x
4) 4y

1) -2,3x*4 = (-2,3*4)x = -9,2x
2) 9y*(-3) = (-3*9)y = -27y
3) 5,2x*(-2) = (-2*5,2)x = -10,4x
4) 2/3y*6 = (2/3*6)y = 4y