Evaluate algebraic expressions with a single variable Question Evaluate the following expression at x=−7. −x−5

2

Step-by-step explanation:

When x = -7, -x - 5 = -(-7) - 5 = 7 - 5 = 2.

-12

Step-by-step explanation: Since, -x= -7,   -7-5= -12( because seven is a negative integer and the equation states that -7 and 5 has to be subtracted, according to various expressions like -1-1 the answer is given that it is -2 if 7 had been a positive integer, then, 7-5=2 as when a positive and negative integer is subtracted, we give the answer either +ve or -ve influenced by the sign of the greater number) Sorry i just noticed that the qstn had mentioned x and not -x, but since it has to be fair in answering, i'll leave the answer as how it was once again sorry