Respuesta :

Advent5647

Answer:

21

Step-by-step explanation:

Step 1:

10x + 14 = 64

Step 2:

10x = 50

Step 3:

50 ÷ 10

Step 4:

x = 5

Step 4:

15 + 6

Answer:

21

Hope This Helps :)

Answer:

7x+8+3x+6=64

10x+14=64

10x=50

X=5

BC=3 x 5+6= 21