a) 3x * 12 = 36x
b) 4 * 0,7x = 2,8x
c)[tex]\frac{1}{3} * 6x= \frac{6}{3}x = 2x[/tex]
d) [tex]\frac{1}{2} * \frac{1}{3}x =\frac{1}{6}x[/tex]
e) [tex]2y * (-\frac{3}{4}) = -\frac{6}{4}y = -\frac{3}{2}y = -1\frac{1}{2}y[/tex]
f) [tex]\frac{x}{2} * 6 = \frac{6x}{2} = 3x[/tex]
g) 6x : 3 = 2x
h) [tex]\frac{3}{4}x : 2 = \frac{3}{4}x * \frac{1}{2} = \frac{3}{8}x[/tex]
i) [tex]\frac{15x}{3} = 5x[/tex]
j) [tex]6 * \frac{x}{9} = \frac{6x}{9} = \frac{2x}{3}[/tex]
k) [tex]\frac{2,5x}{0,5} = 5x[/tex]
l) [tex]\frac{x}{3} * (-9) = \frac{-9x}{3} = -3x[/tex]
