Answer:
7/12
Step-by-step explanation:
7/6 - (1/4 + 1/3) =
7/6 - 1/4 - 1/3 = 14/12 - 3/12 - 4/12 = 7/12
Answer:

Step-by-step explanation:
Complex numbers identity:
The complex numbers identity is:

Square of the sum:

In this question:





So

Answer:
Option 4
Step-by-step explanation:

Answer:
6x -7 is your answer
Step-by-step explanation:
ABC and CBH are right angles
DBC = 90 - 37 = 53
CBJ = 90 - 31 = 59
HBD = 180 - 37 = 143
or
HBD = 31 + 53 + 59 = 143 :)