Question 882199
Add 4 to both sides to get


4 = x - 4


4 <font color="green"> + 4</font> = x - 4 <font color="green"> + 4</font>


8 = x + 0 ... <font color="blue">Notice how the -4 and +4 add to 0</font>


8 = x


x = <font color="red">8</font>


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Final Answer: x = <font color="red">8</font>