Question

qual o resutado da equaçao
$\frac{5x + 3}{10} = \frac{ - 21}{30}$
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Answer 1

Organizando...

30. (5x+3)/10 = -21

3.(5x+3) = -21

5x + 3 = -21/3

5x = -7 - 3

x = -10/5

x = -2