Omg please help me I really really don’t understand this I really need help with it please. And also, be sure to show ur work if how u got ur answer. Thanks.

Three times the sum of a number and seven is negative thirty-six. what is the number?

Tim has obtained a 3/27 balloon mortgage. after the initial period, he decided to refinance the balloon payment with a new 30-year mortgage. how many years will he be paying for his mortgage in total?

When solving a logarithm equation, how do you find the missing variable ?