6 because 6 does not relate with any of these numbers.
But, 7 + 8 = 15, 15 - 7 = 8, and 15- 8= 7
Answer:
6 cannot be used to write related number sentences.
Step-by-step explanation:
The number 6 cannot be used to write related number sentences as it would not fit into the equation and make it true.
[tex]7+8 =15[/tex]
[tex]8+7 =15[/tex]
[tex]15-8 =7[/tex]
[tex]15-7 =8[/tex]
Since, nowhere in any of these equations can the 6 go in,
so that it make these number sentences true.
