First to get rid of the parantheses we must multiply the -1 (which is represented by the negative symbol) by the numbers inside the parantheses.
-(7-2x)+7=-7
-7+2x+7=-7
Then we add like terms.
-7+2x+7=-7
2x=-7
Finally divide both sides by 2
2x=-7
2x/2=-7/2
x=-7/2
The final answer is -7/2
Hope this helps!
