Answer:
[tex]x=21[/tex]
Step-by-step explanation:
I'm not sure if I understood what the problem is asking for and if the numbers behind 3 are answer choices but the answer would be 21.
3's times table:
[tex]3*1=3[/tex]
[tex]3*2=6[/tex]
[tex]3*3=9[/tex]
[tex]3*4=12[/tex]
[tex]3*5=15[/tex]
[tex]3*6=18[/tex]
[tex]3*7=21[/tex]
Since 3 times 7 equals 21 the following equations involving division with the numbers 3, 7, and 21 would be:
[tex]\frac{21}{7}=3[/tex] [tex]\frac{21}{3}=7[/tex]
Hope this helps
