Answer:
3 or 18
Step-by-step explanation:
[tex]\text{If is}\ \dfrac{3}{4}\times4,\ \text{then cancel 4:}\\\\\dfrac{3}{4\!\!\!\!\diagup_1}\times4\!\!\!\!\diagup^1=\dfrac{3}{1}\times1=3\times1=3\\\\\\\text{If is}\ \dfrac{3}{4}\times4!,\ \text{then:}\\\\4!=1\times2\times3\times4\\\\\text{cancel 4:}\\\\\dfrac{3}{4\!\!\!\!\diagup_1}\times1\times2\times3\times4\!\!\!\!\diagup^1=3\times1\times2\times3\times1=18[/tex]
