fifteen increased by 3 times a number is 54

Question

fifteen increased by 3 times a number is 54

Answer 1

so we have a number, multiply it by 3, and add 15. That totals 54:

3x + 15 = 54

 

To solve this, you need to isolate x. Start by subtracting 15 from both sides, then you just need to divide both sides by 3, an you'll have your final answer.