If A and B are mutually opposite numbers, C and D are reciprocal, rational number M, and the distance from the corresponding point on the number axis to the origin is 1, then a+b/a+b+c+cd+m =___________

If A and B are mutually opposite numbers, C and D are reciprocal, rational number M, and the distance from the corresponding point on the number axis to the origin is 1, then a+b/a+b+c+cd+m =___________

The answer is c±1
A.B are mutually opposite numbers
A+b=0, b/a=-1
C, D are reciprocal
Cd=1
M The distance from the corresponding point on the number axis to the origin is 1
Absolute value m+1
A+b/a+b+c+cd+m=c±1

The answer is c±1
A.B are mutually opposite numbers
A+b=0, b/a=-1
C, D are reciprocal
Cd=1
M is 1 from the corresponding point on the number axis to the origin
Absolute value m+1
A+b/a+b+c+cd+m=c±1

Given a, b, c are rational numbers a^2+b^2+c^2=ab+bc+ca test description a=b=c

2A2+2b2+2c2-2ab-2bc-2ac=0
(A2-2ab+b2)+(b2-2bc+c2)+(c2-2ac+a2)=0
(A-b)2+(b-c)2+(c-a)2=0
Then: a-b=b-c=c-a=0, i.e.: a=b=c