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x-7.65x=100

 Dec 24, 2014

Best Answer 

 #1
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+5

If you type in the problem to the calculator, you will get the answer.

In any case,

"1"x-7.65x=100

First, you combine like terms. 

$${\mathtt{1}}{\mathtt{\,-\,}}{\mathtt{7.65}} = {\mathtt{\,-\,}}{\frac{{\mathtt{133}}}{{\mathtt{20}}}} = -{\mathtt{6.65}}$$

Now the equation is as follows:

-6.65x=100

Divide by -6.65 on both sides:

$${\mathtt{\,-\,}}{\frac{{\mathtt{6.65}}{\mathtt{\,\times\,}}{\mathtt{x}}}{-{\mathtt{6.65}}}} = {\frac{{\mathtt{100}}}{-{\mathtt{6.65}}}} \Rightarrow {\mathtt{x}} = {\mathtt{\,-\,}}{\frac{{\mathtt{2\,000}}}{{\mathtt{133}}}} \Rightarrow {\mathtt{x}} = -{\mathtt{15.037\: \!593\: \!984\: \!962\: \!406}}$$

And your answer rounded to the fourth decimal place is 15.0376

 Dec 24, 2014
 #1
avatar
+5
Best Answer

If you type in the problem to the calculator, you will get the answer.

In any case,

"1"x-7.65x=100

First, you combine like terms. 

$${\mathtt{1}}{\mathtt{\,-\,}}{\mathtt{7.65}} = {\mathtt{\,-\,}}{\frac{{\mathtt{133}}}{{\mathtt{20}}}} = -{\mathtt{6.65}}$$

Now the equation is as follows:

-6.65x=100

Divide by -6.65 on both sides:

$${\mathtt{\,-\,}}{\frac{{\mathtt{6.65}}{\mathtt{\,\times\,}}{\mathtt{x}}}{-{\mathtt{6.65}}}} = {\frac{{\mathtt{100}}}{-{\mathtt{6.65}}}} \Rightarrow {\mathtt{x}} = {\mathtt{\,-\,}}{\frac{{\mathtt{2\,000}}}{{\mathtt{133}}}} \Rightarrow {\mathtt{x}} = -{\mathtt{15.037\: \!593\: \!984\: \!962\: \!406}}$$

And your answer rounded to the fourth decimal place is 15.0376

Guest Dec 24, 2014

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