What value of x makes 3x+7=22

Can someone me with my math problems i have a bunch. i will give brainliest and lots of pleeeaaasssee

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n

Multiply and simplify. (x - 4) (x^2 – 5x – 6) i will mark brainliest if your answer is right. show how you got the answer. if your answer is correct but does not show how you got the answer you will not be marked brainliest.