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Mathematics, 28.01.2020 10:31 Richwave17

If the first equation is multiplied by 3 and then the equations are added, the result is

3x + y = 3
x - 3y = -2

10x = 11
10x = 7
8x = 7

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If the first equation is multiplied by 3 and then the equations are added, the result is

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