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Mathematics, 29.12.2019 00:31 Jaimewillis42

X+ y = 4
x - 2y = -5

if the first equation is multiplied by 2 and then the equations are added, the result is

3x = 13
3x = 3
x = 3

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X+ y = 4
x - 2y = -5

if the first equation is multiplied by 2 and then the equatio...

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