Simultaneous equations give you; Bat+Ball=110 Bat-Ball=100 => Bat=110-ball and Bat=100+ball => 110-ball=100+ball
Simultaneous equations give you; Bat+Ball=110 Bat-Ball=100
=> Bat=110-ball and Bat=100+ball
=> 110-ball=100+ball
Correct so far.
which is a tautology....
Nope!
Add "ball" to both sides
=> 110 = 100 + 2(ball)
Subtract 100 from both side
==> 10 = 2(ball)
Divide by 2
=> ball = 5
@Drakien started
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Correct so far.
Nope!
Add "ball" to both sides
=> 110 = 100 + 2(ball)
Subtract 100 from both side
==> 10 = 2(ball)
Divide by 2
=> ball = 5