Question

Les doy corona pero ayundenme plissssssss
(〒︿〒)


¿Cuál procedimiento resuelve la ecuación 7 (2m + 3) - 5m = 2(4m + 8) + 9 ?

A) 7 (2m + 3) - 5m = 2 (4m + 8) + 9

7 (5m) - 5m = 2 (12m) + 9

35m - 5m = 24 m + 9

30m - 24m = 9

6m = 9

m = 9

6

m = 3

2

B) 7 (2m + 3) - 5m = 2 (4m + 8) + 9

14m + 3 - 5m = 8m + 8 + 9

9m + 3 = 8m + 17

9m - 8m = 17 - 3

m = 14

C) 7 (2m + 3) - 5m = 2 (4m + 8) + 9

14m + 21 - 5m = 8m + 16 + 9

9m + 21 = 8m + 25

9m - 8m = 25 - 21

m = 4

D) 7 (2m + 3) - 5m = 2 (4m + 8) + 9

14m + 21 - 5m = 8m + 16 + 9

9m + 21 = 8m + 25

9m + 8m = 25 + 21

17m = 46

m = 46

17

Answer 1

Respuesta:

La opción C

Explicación paso a paso:

$7 (2m + 3) - 5m = 2 (4m + 8) + 9 \\ 14m + 21 - 5m = 8m + 16 + 9 \\ 9m + 21 = 8m + 25 \\ 9m - 8m = 25 - 21 \\ m = 4$