-4r = 8
Divide each side of the equation by -4 :
r = -2
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pq-r, if p is 3, q is 4, and r is -6 is equal to 3 x 4 - (-6), which is equal to 12 + 6, which is equal to 18.
The sign that represents "is not equal to", is an equals sign with a line in it, such as ≠. Therefore, you can write r≠4.
If: d = 60 times 4 then d = 240
4, 8, 12, 16, 20, 24, 28...
50 ÷ 8 = 6 r 2 ⇒ 50/8 = 62/8 = 61/4