Question

A+B=35678

A+C=54678

C+B=65787

tính A,B,C

Answer 1

=> A+B+A+C+C+B= 35678+54678+65787

=> (A+B+C)+(A+B+C)= 156143

=> 2x(A+B+C)= 156143

=> A+B+C= 156143:2

=> A+B+C=78071,5

=>C= 78071,5-35678

=> C= 42393,5

=> B= 78071,5-54678 

=> B= 23393,5

=> A= 78071,5-65787

=> A= 12284,5

Answer 2

Tổng a + b + c = ( 35678 + 54678 + 65787 ) : 2 = 78071,5

 a = 78071,5 - 65787 =12284,5

b = 78071,5 - 54678 = 23393,5

c = 78071,5 - 35678 = 42393,5

Answer 3

lấy 54678 - 35678

A + C - A -B = 19000

C-B=19000

lấy 19000 + 65787

C-B+C+B=84787

C=84787/2=42393.5

B=65787-42393.5=23393.5

A=35678-23393.5=12284.5

Answer 4

a;b;c=(35678+54678+65787):2=78076,5