Answer:
Look below.
Step-by-step explanation:
Use a calculator.
A
Given
a = - = ← as a single fraction
Thus
= = → A
CD=CA+AB+BD
AB=CD-CA-BD
AB=CD-BD-BD
AB=CD-2.BD
AB=CD-2(BC+CD)
AB=CD-2BC-2CD
AB=-(CD+2BC)
AB=-{98-6(x+8)}
AB= 6x-50
9x+27
3x(4−1)+6+21
=9x+6+21
Combine Like Terms
=(9x)+(6+21)
=9x+27