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1 November, 03:15

Write and solve the system using any method:

Find the value of two numbers if their sum is 25

and their difference is 7.

This is a 3 part question; answer all 3 parts.

1. Write the first equation.

2. Write the second equation.

3. Write your solution

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Answers (1)
  1. 1 November, 06:10
    0
    1. x + y = 25

    2. x - y = 7

    3. x = 16, y = 9

    Step-by-step explanation:

    (x + y = 25) + (x - y = 7)

    2x (the y cancels) = 32

    32/2 = 16, x = 16

    substitute x in either equation

    16 + y = 25

    y = 9
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