A.
2a. (a, b and c are all equal.)
A=0 b=0 c=0
the answer is a
Ax + B = Bx + C Ax - Bx = (C - B) x (A - B) = (C - B) x = (C - B) / (A - B)
a= (+a) or a= (-) b= 2a b= 2a c= (-a) c= (+a)
a=24 b=16 c=18
A.
2a. (a, b and c are all equal.)
Because there is no way to define the divisors, the equations cannot be evaluated.
A=0 b=0 c=0
the answer is a
a = 20 b = 60 c = 100
Ax + B = Bx + C Ax - Bx = (C - B) x (A - B) = (C - B) x = (C - B) / (A - B)
x + y + z = 0 x = a - b, y = b - c, z = c - a, therefore a - b + b - c + c - a = ? a - a + b - b + c - c = 0
7.5
A+c= 2a+b