This is middle school??? AinT no way
Step-by-step explanation:
6а – 2а = -48
4a=-48
a=-12
Answer:

It's change of subject. :)
Given:
420 tropical fishes
angel fish = x
parrot fish = 6x
x + y = 420
y = 6x Choice D.
x + y = 420
y = 6x
x + 6x = 420
7x = 420
x = 420 / 7
x = 60 number of angelfish
y = 6x
y = 6(60)
y = 360 number of parrot fish