Question

a) × + 3 = 9
b) 6× = 12
c) y + 12 = y + 3y

Answer 1

Resposta:

$\blue{a)x = 6}$

$\blue{b)x = 2}$

$\blue{c)y = 4}$

Explicação passo-a-passo:

$\blue{a)x + 3 = 9}$

$\blue{x = 9 - 3}$

$\blue{x = 6}$

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$\blue{b)6x = 12}$

$\blue{x = \frac{12}{6} }$

$\blue{x = 2}$

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$\blue{c)y + 12 = y + 3y}$

$\blue{y + 12 = 4y}$

$\blue{12 = 4y - y}$

$\blue{12 = 3y}$

$\blue{ \frac{12}{3} = y}$

$\blue{y = 4}$

Espero ter ajudado!