Answer:
The expression for two times the difference of 4 and a number is

Step-by-step explanation:
To Find:
Write an expression for Eight times the difference of 4 and a number.
Solution:
Let the Unknown number be 'd'
Difference of 4 and d = ( 4 - d )
So One Time Difference of 4 and d = 1× ( 4 - d )
∴ Two Times Difference of 4 and d = 2× ( 4 - d )
∴ Eight Times Difference of 4 and d = 8× ( 4 - d )
The expression for Eight times the difference of 4 and d. will be

The expression for Eight times the difference of 4 and a number is

2 x 9 - 3 x 5 + 4
In math/s we have the rule called BEDMAS
(a.k.a. BODMAS, BIDMAS, PEDMAS, etc)
Brackets
Exponent
Division
Multiplication
Addition
Subtraction
We go from top to bottom of the list of rules for every math equation. There’s just one exception, addition and subtraction are treated equally, and so when we have an equation with just addition and subtraction, we work left to right
2 x 9 - 3 x 5 + 4
We have no brackets and no exponents, and there’s nothing to divide.
So, we do multiplication
18 - 15 + 4
If you remember, addition and subtraction are treated the same. Therefore, we work left to right.
18 - 15 + 4 = 7
You can type your question into goorgle or a calculator, and you’ll get 7!
(100 5/8) / (14 3/8)
(805 / 8) / (115/8) =
805/8 * 8 / 115 =
805 / 115 =
7 <===
The answer is x=5 and y=2