Question

qual o valor numérico de y? 4y + 2 = 8y - 4​

Answer 1

Resposta:

$\LARGE\boxed{y = \frac{3}{2} }$

Explicação passo-a-passo:

$\LARGE{}4y + 2 = 8y - 4 \\ \LARGE{}4y - 8y = - 4 + 2 \\ \LARGE{}4y = - 2 \\ \LARGE{}\cancel{ - 4}y \div \cancel{ (- 4)} = - 6 \div ( - 4) \\ \LARGE{}y = - 6 \div ( - 4) \\ \LARGE{}y = 6 \div 4 \\ \LARGE{}y = \cancel{\frac{6}{4}} \: \div 2 \\ \\ \LARGE\boxed{y = \frac{3}{2} }$

Answer 2

Resposta:

$y = \frac{3}{2}$

Explicação passo-a-passo:

$4y + 2 = 8y - 4 \\ 4y + 2 = 8y - 4 \\ 4y + 2 - 8y = 8y - 4 - 8y \\ 4y + 2 - 8y = - 4 \\ 4y + 2 = 8y - 4 \\ 4y + 2 - 8y = - 4 \\ 4y + 2 = 8y - 4 \\ 4y + 2 - 8y - 2 = - 4 - 2 \\ 4y - 8y = - 4 - 2 \\ 4y + 2 = 8y - 4 \\ 4y - 8y = - 4 - 2 \\ 4y - 8y \\ (4 - 8)y \\ - 4y \\ 4y - 8y = - 4 - 2 \\ - 4y = - 4 - 2 \\ 4y - 8y = - 4 - 2 \\ - 4 - 2 \\ - (4 + 2) \\ - 6 \\ 4y - 8y = - 4 - 2 \\ - 4y = - 6 \\ - 4y \div ( - 4) = - 6 \div ( - 4) \\ y = - 6 \div ( - 4) \\ - 4y \ \div ( - 4) = - 6 \div ( - 4) \\ y = 6 \div 4 \\ - 4y \div ( - 4) = - 6 \div ( - 4) \\ y = \frac{6}{4} \\ \\ y = \cancel{ \frac{6}{4} } \\ \\ y = \frac{3}{2} \\ \\ - 4y = - 6 \\ \\ y = \frac{3}{2} \\ resposta \\ y = \frac{3}{2}$