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04-11-2019
Mathematics

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find 2 numbers a and b whose sum is 4 and whose difference is -2

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Аноним Аноним

04-11-2019

Answer:

a = 1, b = 3.

Step-by-step explanation:

a + b = 4

a - b = -2 Adding to eliminate b:

2a = 2

a = 1

So 1 + b = 4

giving b = 3.

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