Question

17. ¿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
бm = 9
9
m = =
6
3
M =
2

B)
7 (2mm + 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
46
m =
17​

Answer 1

Respuesta:

7(2m+3)−5m=2(4m+8)+9

9m+21=8m+259m+21=8m+25

9m+21-21=8m+25-219m+21−21=8m+25−21

9m=8m+49m=8m+4

9m-8m=8m+4m-8m9m−8m=8m+4m−8m

m=4m=4. ESA ES