Bonjour pouvez vous m'aider a résoudre ces système d'équations ?
a.
(2x+3y=1
(3x+4y=2
b.
(5x=4y=-2
(-3x+2y+4
a.
(2x+3y=1
(3x+4y=2
b.
(5x=4y=-2
(-3x+2y+4
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x = ( 1 × -4 − 2 × 2 ) / -18
x = ( -4 − 4 ) / -18
x = ( -8 ) / -18
4x = —
9
y = ( 2 × 3 − 1 × 3 ) / -18
y = ( 6 − 3 ) / -18
y = ( 3 ) / -18
1y = − —
6
(5x-4y=-2
(-3x+2y=4
x = ( -2 × 2 − 4 × -4 ) / -2
x = ( -4 − -16 ) / -2
x = ( 12 ) / -2
x = -6y = ( 4 × 5 − -2 × -3 ) / -2
y = ( 20 − 6 ) / -2
y = ( 14 ) / -2
y = -7