Six times the quantity of 4 minus a number is 15. Find the number. Show your work. This should be easy to pros. Thanks
Model the problem like this:
x is the quantity needed
x - 4 the quantity minus 4
six time the quantity minus 4 is: ______________fill the blank
the last one is = 15.
Find the quantity.
Does this help
Ok thanks but I need to see the whole problem to understand it...I'm not getting the same answer that's in the back of the book which is 1.
I multiplied 6 times 4 and got 24 then 6 times x which is 6x...I added 24 to both sides and got 15 + 24 which is 39 on the right and divided that by 6 and MY answer was 6 and 1/2 but the answer is 1.5. What did I do wrong...HELP! thanks
You had 24-6x = 15. If you add 24 to both sides, you get (24 - 6x) + 24 = 15 + 24. Add this up, and now you have 48 - 6x = 39. You are trying to get all terms with an x on one side and all numbers on the other. So, adding 24 to both sides did not help at all. So, you try subtracting 24 from both sides. 24 - 6x - 24 = 15 - 24. Since 24-24 = 0, on the left hand side, you are only left with -6x. On the right hand side, 15-24 = -9.