Olá!
x+y=96 x=96-y
2x+4y=242
2.(96-y)+4y=242
192-2y+4y=242
2y=242-192
2y=50
y=25 25 cisnes
x=96-25
x=71 71 girafas
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Verified answer
X + y = 964x + 2y = 242
4x + 4y = 384
4x + 2y = 242
Subtrair
2y = 142
y = 71
96 - 71 = 25
Temos 71 cisnes e 25 girafas
Olá!
x+y=96 x=96-y
2x+4y=242
2.(96-y)+4y=242
192-2y+4y=242
2y=242-192
2y=50
y=25 25 cisnes
x=96-25
x=71 71 girafas