Answer:
n=5
Step-by-step explanation:
7n-4=31
The goal is to get the variable alone. Start by adding 4 to both sides.
7n=35
To separate the n further we divide both sides by 7.
n=5
We can actually plug that value in to check our answer.
7×5-4 this value does equal 31, so we know it is correct.
