Twice the difference of a number and 3 equals 8

Mathematics

2 answers:

polet [3.4K]2 years ago

6 0

Suppose the number = x

Then, algebraically written, it would be:

2x - 3 = 8

Now we just solve this for x:

2x - 3 = 8

Adding 3 to both sides:

2x - 3 + 3 = 8 + 3

2x = 11

Dividing both sides by 2:

2x/2 = 11/2

x = 5.5

Proof:

We shall check it by substituting the value of x in the original equation:

2x - 3 = 8

2(5.5) - 3 = 8

11 - 3 = 8

8 = 8

This proves that our solution was correct :)

I hope this helps, I tried to be as descriptive as possible.

Vikentia [17]2 years ago

3 0

This equation would be written as 2(n-3)=8.

You might be interested in

A shoe company sends out 7 trucks loaded with nursing shoes that cost the company $ 1,572per truck if they send out 750 boxes pe

weqwewe [10]

1572*7=11004

750*125.40=94050

94050-11004=83046

the profit is $83046

6 0

2 years ago

10. When you add the same number to both sides of an inequality, is the inequality still true? Explain how you know your stateme

avanturin [10]

The inequality is still true! If you add a number, say 5 to both sides of the following inequality, does anything change?

3 < 6

3 + 5 < 6 + 5

8 < 11

The inequality is still true. We know the statement holds for subtracting the same number because, in a way, addition and subtraction are pretty much the same operation. If I subtract 5 from both sides, I can think of it like "I add negative 5 to both sides" or something along those lines. It's kind of backwards thinking.

6 0

3 years ago

twice the number of donuts was only 6 less than 24 times the number of cream puffs. 10 times the number of cream puffs was only

Karolina [17]

donuts and cream puffs were 45 & 4 respectively !

<u>Step-by-step explanation:</u>

Here we have , twice the number of donuts was only 6 less than 24 times the number of cream puffs. 10 times the number of cream puffs was only 5 less than the number of donuts We need to find how many donuts and cream puffs were there . Let's find out:

Let number of donuts and cream puffs are x & y respectively ! So ,