А+В=180 А-В=20 Найдите А и В

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To solve this system of equations, we can add the two equations together to eliminate B:

A + B = 180
A - B = 20

Adding the two equations together:

2A = 200

Dividing by 2:

A = 100

Now we can substitute the value of A back into one of the original equations to solve for B:

100 + B = 180
B = 80

Therefore, A = 100 and B = 80.