If 10 is less than a number is multiplied by 3, the result is equal to 2 times the number. what is the number?

Need solving this second acceleration problem.

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.