Answer:
Gray and all are right.
Explanation:
4.5x + 16 = 11.5
4.5x = 11.5 - 16
4.5x = -4,5
x = -4.5/4.5
x = -1
4.5x + 27 = -9
4.5x = -9 - 27
4.5x = -36
x = -36/4.5
x = -8
4.5x - 16 = 11
4.5x = 11 + 16
4.5x = 27
x = 27/4.5
x = 6
-4.5x + 27 = 45
-4.5x = 45 - 27
-4.5x = 18
x = 18/-4.5
x = -4
Correct
To isolate the variable of x, simply add 16 to 11 which is 27 and now it is set up as 4.5x=27 and 27/4.5, it = 6
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