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Q: If a plus b equals c what does a plus c equal?

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the answer is a

2a. (a, b and c are all equal.)

a=24 b=16 c=18

Because there is no way to define the divisors, the equations cannot be evaluated.

C equals A plus B under all circumstances; C= A + B.

a= (+a) or a= (-) b= 2a b= 2a c= (-a) c= (+a)

That depends on the value of the variables (A, B, and C). It can be anything.

z remains undefined.

yes

b + b + b + c + c + c + c = 3b + 4c

A.

Just subtract y from both sides. 'm' becomes 'A', 'b' becomes 'C' and 'B' will be equal to one.

When b is zero.

Yes.

2b+3c

2s-2b= a+b+c-2b simplified that would be a+c-b.

7.5

a = 20 b = 60 c = 100

A=0 b=0 c=0

And how does this relate to coins?

a + b = c

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

Ax + B = Bx + C Ax - Bx = (C - B) x (A - B) = (C - B) x = (C - B) / (A - B)

b = 40 - a, c = 42 - a so b + c = 40 - a + 42 - a, ie 82 -2a = 34 so a = 48/2 ie 24 b = 40 - 24 ie 16 and c = 42 - 24 ie 18

Because it is mathematically incorrect. a^2 + b^2 = c^2 Take square root of both sides. SQRT (a^2 + b^2) = c So you see, it is not a plus b equal c.