Please help me this has to be just a fake question 98 points (7)/(4) - 9 / .08 + (4)/(5) - 7 * .8 ​

Question

Please help me this has to be just a fake question 98 points


`(7)/(4) - 9 / .08 + (4)/(5) - 7 * .8`
​

Answer 1

Let's try solving the problem using the order of operations method, otherwise known as PEMDAS.

`\begin{tabular} lOrder of Operation & Required Operation \\\cline{1-2}1 & Parentheses () \\2 & Exponents e^(x) \\3 & Multiplication * \\4 & Division / \\5 & Addition + \\6 & Subtraction -\end{tabular}`

We are given this question :

`\mathrm {(7)/(4) - 9 / .08 + (4)/(5) - 7 * .8}`

Since there are no parentheses or exponents, let's multiply.

`\mathrm {(7)/(4) - 9 / .08 + (4)/(5) - 5.6}`

The next step is to divide.

`\mathrm {(7)/(4) - 112.5 + (4)/(5) - 5.6}`

After that, add.

`\mathrm {(7)/(4) - 112.5 + 0.8 - 5.6}`

`\mathrm {(7)/(4) - 111.7 - 5.6}`

Finally, subtract the remaining terms.

`\mathrm {1.75 - 111.7 - 5.6}`

`\mathrm {-109.95 - 5.6}`

`\mathrm {-115.55}`

The final answer is -115.55.

I hope this helped solve the problem.

Good luck on your studies!

Answer 2

-115.55

Explanation:

7/4 -9÷ .08 + 4/5 -7 * .8

I would change fractions to decimals

1.75 - 9 ÷ .08 +.8 -7 * .8

Now using pemdas, multiply and divide from left to right

1.75 -112.5 +.8 -7 * .8

1.75 -112.5 +.8 -5.6

Now add and subtract from left to right

-110.75+.8 -5.6

-109.95-5.6

-115.55