Question

a) three times a number added to another number gives 25. Take the numbers as x and y and form equation
b) instead of adding if the number is subtracted we get 17 . Using this idea and form another equation .

c) find the numbers ?
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Answer 1

Step-by-step explanation:

Let the numbers be X and Y

• 3X+Y = 25 (Equation 1)

If instead of adding,the number is subtracted we get

• 3X - Y = 17 (Equation 2)

Now add equation 1 and 2 we get

• (3X+Y)+(3X-Y) = 25+17
• 6X = 42 Thus X = 7

Now putting the value of X in Equation 1 we get

• 3X+Y = 25, 3*7 +Y = 25
• Y = 25-21 = 4 Thus Y = 4

Thus our required numbers are X = 7 and Y = 4

Answer 2

Answer:

Let the numbers be X and Y

3X+Y = 25 (Equation 1)

If instead of adding,the number is subtracted we get

3X - Y = 17 (Equation 2)

Now add equation 1 and 2 we get

(3X+Y)+(3X-Y) = 25+17

6X = 42 Thus X = 7

Now putting the value of X in Equation 1 we get

3X+Y = 25, 3*7 +Y = 25

Y = 25-21 = 4 Thus Y = 4

Thus our required numbers are X = 7 and Y = 4

 explanation: