Answer:
154.2g
Step-by-step explanation:
This is quite straightforward, what we need to add the masses together.
113g + 114g + 27.2g = 154.2g
The confirmed correct answer is -9%. Trust me.
Second line on the right side of the equation it should be 2x(-13)
so then 8x - 24 + 7 = -26x
8x - 17 = -26x
then in hers she added the 8 to 26 when she should have subtracted it
it should be -17 = -34x
so 17 = 34x
1/2 = x
