You can solve it the way I and Tann did it, but you can also do this:

For X = ball and Y = bat

X + Y = 1.1

Y = X +1

So what you can do is rearranging the terms so that they line up one under another, like this:

X + Y = 1.1

(-X) + Y = 1

All I did was moving X from the right side of the equation to the left, so it naturally gives X the opposite sign ( now it's a negative X or minus X). Then to line up Y under the first equation, I put the -X in front, with the addition sign, relying on the commutativity of addition in mathematics, meaning that I can change the order of operands and doing so doesn't affect the result.

After they are lined up, you can treat these two equation as 3 vertical ones and you see X is above -X, well imagine you subtract all three horizontally and you get something like this:

X - (-X) = 2X

Y - Y = 0

1.1 - 1 = 0.1

So if you calculate what happens, X - (-X) means, two minus signs become a plus and you get 2X

Y is gone and there is 0.1 left.

So if you now put the elements back to the original equation, you will see:

2X + 0 = 0.1

At this point you can divide by two, 0 can be removed since it's a zero, you can have as many as you like and they don't affect the result.

So you get the familiar X = 0.05

This method is a more graphical way, relying on the vertical column of this matrix (system of variables). The alternate method becomes much more useful as the number of equations and individual terms increases, say someone asked about ball, bat, glove and a few other items and laid out their relations to each other.

Needless to say this type of question will never be brought up to you in real life ever.

It already has in this thread and your reply is a silly one.

Math is much more than practical down to earth thinking, it's a framework, it allows exploring new horizons. I don't care why you dislike maths, but you come to every math thread I see and try to diminish it in some way or another.

I'm going to run any math problems I have by this forum from now on.

Good to hear this, it's supposed to be a forum of thinkers, not just whiny philosophers.

*Eyes Onestep* "Who made you that pulpit, I bet it was some engineer."