One number is four more than a second number. Two times the first number is 8 more than four times the second number.

The required numbers are:

First number = 4

Second number = 0

Step-by-step explanation:

Let First number = x

second number = y

We are given:

One number is four more than a second number.

Writing in mathematical form:

Two times the first number is 8 more than four times the second

Writing in mathematical form:

Now, we will solve these equations by substitution to find values of x and y

Let:

Now, putting value of x from eq(1) into eq(2)

So, we get y=0

Now put value of y in equation 1 to get value of x

So, we get x=4

So, the required numbers are:

First number = 4

Second number = 0

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10