Question

one number is 7 times another. if their difference is 18, find the numbers​

Answer 1

Answer:

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Step-by-step explanation:

• x = one number
• y = another
• x = 7y
• x-y =18

.

substitute x=7y

• 7y-y = 18

• 6y = 18
• y = 3

.

substitute y=3

• x = 7y
• x = 7(3)
• x = 21

.

Always check your answer.

Is the difference = 18?

21 -3 = 18.

Correct.

And of course, we know 21 = 3×7

.

The two numbers are 3 and 21.

.

Done

Hope it Helps!

Answer 2

Answer:

*let the number greater than other number by seven times be x, other number be y

i.e

x=7y-------1

*given difference between the numbers is 18

x-y =18------2

*substitute the value of x in equation 2

7y-y=18

6y=18

y=3

*substitute the value of y in equation 1

x=7(3)

x=21

therefore the numbers are 3 and 21