my sis needs help asap

Answer:
B. 7
Step-by-step explanation:
7 × n = 42 + 7
7n = 49
n = 49/7
n = 7
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Hope it helps ⚜
[tex]7 \times n = 42 + 7[/tex]
what the "n" represents
[tex]7 \times n = 42 + 7[/tex]
[tex]7 \times n = 49[/tex]
[tex]n = \frac{49}{7} [/tex]
[tex]n = 7[/tex]
therefore, "n" represents 7.
answer= option B