Question

9(2a -4) = 6(a + 2) comprobación ​

Answer 1

Respuesta:

$9(2a - 4) = 6(a + 2) \\ 18a - 36 = 6a + 12 \\ 18a = 6a + 12 + 36 \\ 18a - 6a = 12 + 36 \\ 12a = 48 \\ a = \frac{48}{12} \\ a = 4 \\comprobacion \\ 9(2a - 4) = 6(a + 2) \\ 9(2(4) - 4) = 6(4 + 2) \\ 9(8 - 4) = 6(6) \\ 36 = 36$