Answer:
The missing factor is 1.
[tex]28=7\times(4\times1)[/tex]
Step-by-step explanation:
[tex]28=7\times(4\times y)[/tex], where y is the unknown factor.
You can solve this equation for y.
Divide both sides by 7:
[tex]\rightarrow 28\div7=(7\times(4\times y))\div7\\\rightarrow4=4\times y[/tex]
Divide both sides by 4:
[tex]\rightarrow4\div4=(4\times y)\div4\\\rightarrow1=y\\\rightarrow y=1[/tex]
The missing factor is 1.
[tex]28=7\times(4\times1)[/tex]
You can also tell just by looking on this particular problem. [tex]7\times4=28[/tex], so the missing factor can't be anything other than 1.
