Solution 2.2:1b
From Förberedande kurs i matematik 1
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- | {{ | + | To get ''x'' by itself on the left-hand side, we subtract 1 from both sides |
- | < | + | |
- | {{ | + | {{Displayed math||<math>2x+1-1=13-1</math>}} |
+ | |||
+ | which gives | ||
+ | |||
+ | {{Displayed math||<math>2x=12\,\textrm{.}</math>}} | ||
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+ | Then divide both sides by 2, | ||
+ | |||
+ | {{Displayed math||<math>\frac{2x}{2}=\frac{12}{2}</math>}} | ||
+ | |||
+ | to get ''x'', | ||
+ | |||
+ | {{Displayed math||<math>x=6\,\textrm{.}</math>}} |
Current revision
To get x by itself on the left-hand side, we subtract 1 from both sides
\displaystyle 2x+1-1=13-1 |
which gives
\displaystyle 2x=12\,\textrm{.} |
Then divide both sides by 2,
\displaystyle \frac{2x}{2}=\frac{12}{2} |
to get x,
\displaystyle x=6\,\textrm{.} |