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alexsandersilva173
@alexsandersilva173
June 2023
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5a-8b=-9
b=6-a
nao esqueçam de apresenttar o calculo
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navegador87
Verified answer
5a - 8b = -9
5a - 8 . (6 - a)= -9
5a - 48 + 8a = -9
5a + 8a = 39
13a = 39
a = 39/13
a = 3
B = 6 - a
B = 6 - 3
B = 3
2 votes
Thanks 1
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Verified answer
5a - 8b = -95a - 8 . (6 - a)= -9
5a - 48 + 8a = -9
5a + 8a = 39
13a = 39
a = 39/13
a = 3
B = 6 - a
B = 6 - 3
B = 3