Question

23. Find two numbers whose sum is 75 and difference is 15
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Answer 1

Step-by-step explanation:

let the numbers be x and y

their sum = 75 and difference = 15

x + y = 75

x - y = 15

........................

2x = 90

.....................

2x = 90

x = 90/2

x = 45

substitute in 1st equation

x + y = 75

45 + y = 75

y = 75 - 45

y = 30

hence the two numbers are 45 and 30

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Answer 2

$\huge\underline\mathfrak\blue{Solution}$

Let the two number be x and y

x + y = 75

x - y = 15

Adding both

2x = 90

x = 45

Substitute in first one

y = 75 - 45 = 30

x = 45 and y = 30

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