Answer:
Hmmmm, very tricky question but I'll figure it out and type it in the comments
r=-45
Step-by-step explanation:
r/5=-9
x 5 x5
________________
Hope this helps ∞<3
1a) 8 / (1/2) = 16 * 3 = 48
1b) 3sqrt(49) = 3 * 7 = 21
1c) (5+2)(-8) / (-2)^3 -3
(7*-8) / (-8 -3)
-56/-11
56/11