Question

If -4/5×[5/7×-8/9]=[-4/5×k]×-8/9

Answer 1

Answer:

k = 2,8

Step-by-step explanation:

-4/5 × [5/7 × -8/9] = [-4/5 × k] × -8/9

-4/5 × -40/63 = -4/5k × -8/9

80/315 = 32/45k

80 × 45k = 315 × 32

3600k = 10080

k = 10080/3600

k = 2,8