Question
Simplify: $a - [2b - {3a - (2b - 3c)}]$
✓
Answer
We have:a $- [2b - {3a - (2b - 3c)}]$
$= a - [2b - {3a - 2b + 3c}]$
[Removing grouping symbol $( )]$
$= a - [2b - 3a + 2b - 3c]$
(Removing grouping symbol $\{\})$
$= a - [4b - 3a - 3c]$
$= a - 4b + 3a + 3c$
(Removing grouping symbol $[ ])$
$= 4a - 4b + 3c$
$= a - [2b - {3a - 2b + 3c}]$
[Removing grouping symbol $( )]$
$= a - [2b - 3a + 2b - 3c]$
(Removing grouping symbol $\{\})$
$= a - [4b - 3a - 3c]$
$= a - 4b + 3a + 3c$
(Removing grouping symbol $[ ])$
$= 4a - 4b + 3c$
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