This is the answer to the problem. You basically substitute the -6 in for the f(x)
The GCF of 24 and 60 is 12.
Each box had 100 blocks in it.
-- 1/5 of the blocks in one box = 100/5 = 20 blocks.
-- 1/5 of the blocks in the other box = 100/5 = 20 blocks.
-- Total number of blocks used = (20 + 20) = 40 blocks.
-9+3x
2(9-3x)/-2
-(9-3x)
-9+3x
Brainliest?