Question

Como resolvo essa equacao de 1grau
3x-1 =5
2

Answer 1

$3x- \dfrac{1}{2} =5\\\\\\3x=5+ \dfrac{1}{2}\\\\\\3x= \dfrac{10}{2} + \dfrac{1}{2}\\\\\\3x= \dfrac{11}{2} \\\\\\x= \dfrac{11}{ \dfrac{2}{3} }\\\\\\x= \dfrac{11}{2} \times \dfrac{1}{3} \\\\\\\\x= \dfrac{11}{6}$

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Confirmando:

Troca o "x" por 11/6

$3x- \dfrac{1}{2} =5\\\\\\\\3 \times \dfrac{11}{6} - \dfrac{1}{2} =5\\\\\\ \dfrac{33}{6}- \dfrac{1}{2} =5\\\\\\ \dfrac{33}{6} - \dfrac{3}{6} =5\\\\\\\\ \dfrac{30}{6} =5\\\\\\5=5$

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Forte abraço!