Lösung 2.2:1c
Aus Online Mathematik Brückenkurs 1
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Version vom 13:53, 22. Okt. 2008
Because there is an x on both the left- and right-hand sides, the first step is to subtract x/3 from both sides,
| \displaystyle \tfrac{1}{3}x-1-\tfrac{1}{3}x=x-\tfrac{1}{3}x |
so as to collect x on the right-hand side
| \displaystyle -1=\tfrac{2}{3}x\,\textrm{.} |
Then, multiply both sides by 3/2,
| \displaystyle \tfrac{3}{2}\cdot (-1) = \tfrac{3}{2}\cdot\tfrac{2}{3}x\,, |
so that 2/3 can be eliminated on the right-hand side to give us
| \displaystyle -\tfrac{3}{2}=x\,\textrm{.} |
