Alright, lets get started.
The given expression is
![7x - 14](https://img.qammunity.org/2019/formulas/mathematics/middle-school/u6n9bwwg9gb4n5d7p0oedy5d4bvity37xh.png)
Option A :
not equivalent with given expression.
Option B :
not equivalent with given expression.
Option C :
![- (14 - 7x)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/ewj6byhmaud5xssfath1azzfgij3nct8ee.png)
We could distribute minus sign into parenthesis
![- 14 + 7 x](https://img.qammunity.org/2019/formulas/mathematics/middle-school/pugmahvg1c4o2l07yxxr6m0n1810i9ofjk.png)
or
which is equivalent with given expression.
Option D :
![7 (x-2)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/531ha5y51k1a050wyijx20p4x75vce42fm.png)
Distribute 7 into parenthesis
![7 x - 7 * 2](https://img.qammunity.org/2019/formulas/mathematics/middle-school/h7a7s6no4a2oezzqgxt3hr8lklms815yj2.png)
which is equivalent with given expression.
Option E :
![3x - 14 + 4x](https://img.qammunity.org/2019/formulas/mathematics/middle-school/9jzmbmsziie5giwq3buf55e4reaoco1qoc.png)
Adding similar terms together
which is equivalent with given expression.
Option F :
![2x - 10 + 5x + 4](https://img.qammunity.org/2019/formulas/mathematics/middle-school/3n6gvn5yuwbwzu6hd1r0ow36l6z5ebzo2h.png)
Adding similar terms together
![7 x - 10 + 4](https://img.qammunity.org/2019/formulas/mathematics/middle-school/inarwqjo7eao2uxd5v20w4q4a32ump7gei.png)
not equivalent with given expression.
It means option C, D, E are equivalent to given expression. : Answer
Hope it will help :)