Question

Please explain to me the steps in solving 2.14 x - 12.18 = -5.76

Answer 1

You need to isolate the x

Answer 2

you must find the x

Answer 3

First move - 12.8 to the other side

Answer 4

So add 12.8 to both sides of equation

Answer 5

Then divide by 2.14

Answer 6

Divide by 2.14 on both sides.

Answer 7

Got it?

Answer 8

I'm sorry, I don't get it, I'm really bad at math :/ I never know where to put numbers and whatnot... would you mind explaining it to me again?

Answer 9

Yes, no problem.
You have to isolate X from all the other numbers, and put them on the other side of the equation.

Answer 10

So since - 12.8 is on the X side, you have to add 12.8 to both sides of the equation so that it cancels out on one side and it's added on the other side. Remember whatever you do to one side of the equation, you also have to do it to the other side.

Answer 11

Then since 2.14 is being multiplied to X just divide both sides by 2.14.

Answer 12

Okay, and what do you mean by "both sides of the equation?" Is it 12.18 + 2.14, or 12.18 + -5.76?

Answer 13

like this: \[2.4x-12.8+12.8=-5.76+12.8\]

Answer 14

then divide by 2.4 on both sides so that X can be isolated.

Answer 15

x=-2.933333333

Answer 16

sorry I messed up, it's 2.14, not 2.4!

Answer 17

and 7.04 is a positive number too! I was on my phone trying to answer!

Answer 18

\[\frac{ 2.14x }{ 2.14 }=\frac{ 7.04 }{ 2.14 } \]

Answer 19

x=3.289719626

Answer 20

to check your answer, just substitute the value of X into the original equation:

Answer 21

2(3.289719626)-12.8=-5.76

Answer 22

Ohhh, okay, so the answer is 3, correct?

Answer 23

3.289719626

Answer 24

Thank you so much for your help!

Answer 25

You're welcome!