X-.12x=88How do I get value of x

Question

x- .12x=88.  How do I get value of x

Answer 1

Hi Fausto, I like Sung's answer and approach but wanted to show you another way to make sure you know why you got stuck on the question. you have x - .12x = 88 the key here is that the first x has a coefficient of 1. Sometimes people don't even write the 1 since 1 is an identity. In this case it'll help you: 1x - .12x = 88 Now you can combine like terms. .88x = 88 divide both sides by .88 x = 100 If you want to check your answer: Look at the original problem. For x - .12x = 88 let's plug in our answer and see: 100 - .12(100) = 88 100 - 12 = 88 88 = 88, so this checks out!

Answer 2

If you multiply 100 for each side, you will get

100x - 12x = 8800

now, subtraction 12x from 100x will give 88x.

88x = 8800

Each side has to divided by 88 will give

x = 100.

 

Hope this help you.