In the brackets, the first number
refers to x, and the second to y (like when you write coordinates).
So
we can check what is y ineach of the options and compare whether both of the sided of the equasion are equal: A. 2x-5=-1, should be 11, false B.
2x-5=4-9=-5, should be 1, false C. 2x-5=2-5=-3, should be -3, correct D.
2x-5=10-5=5, should be -5, false
(x-4)•2 < 9 the difference between x and 4 means to subtract and twice that means to double or times by 2 and all that’s LESS than 9 so the sign opens up towards the 9
