Question

preciso no cramer por favor

Answer 1

Oi AnaCarolina

3x - y + z = 4
x + y + z = 6
2x + y - z = -2

detA = -10
detAx = -4
detAy = -14
detAz = -42

x = detAx/detA = -4/-10 = 2/5
y = detAy/detA = -14/-10 = 7/5
z = detAz/detA = -42/-10 = 21/5 

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