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# 10s

has any one see this? if a+b=10 then a x1=10-b

Note by Andrew Patton
1 year, 3 months ago

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Sorry, I didn't get the point behind this. · 1 year, 3 months ago

I use it to teach.is thare a name for the relaenship? · 1 year, 3 months ago

Oh, if you meant this, $a + b = 10 \Longleftrightarrow a = 10 - b$ it follows from the fact that the equality is unchanged on subtracting the same quantity on both sides. · 1 year, 3 months ago