Solution 2.2:1d
From Förberedande kurs i matematik 1
Move x to the left-hand side by subtracting 2x from both sides,
\displaystyle 5x+7-2x=2x-6-2x |
which gives
\displaystyle 3x+7=-6\,\textrm{.} |
Subtract 7 from both sides,
\displaystyle 3x+7-7=-6-7 |
so that the term 3x alone remains on the left-hand side
\displaystyle 3x=-13\,\textrm{.} |
Then, divide both sides by 3,
\displaystyle \frac{3x}{3}=-\frac{13}{3}\,\textrm{,} |
to get x,
\displaystyle x=-\frac{13}{3}\,\textrm{.} |