If a ≠ 0, find the value of 3A + 3B + B / A + 1 / 2CD. Thank you!

If a ≠ 0, find the value of 3A + 3B + B / A + 1 / 2CD. Thank you!

a. B is opposite to each other, C and B are reciprocal to each other
a+b=0 cd=1
3a+3b+b/a+1/2cd=-1+1/2=-1/2

If a and B are opposite to each other and C and D are reciprocal to each other, then 2CD + A + B=

A and B are opposite numbers, so a + B = 0
C and D are reciprocal, so CD = 1
2cd+a+b=2*1+0=2

If a, B are opposite to each other and C, D are reciprocal to each other, then 2CD + A + B=______ ．

If a and B are opposite, then a + B = 0, C and D are reciprocal, then CD = 1, then 2CD + A + B = 2 + 0 = 2