Answer:
x=-42 to check ur answer place it like this 7-(-42) =49 which is correct
Answer:
y+7-2=21
y+5=21
y+21-5
y=16
Step-by-step explanation:
In each quantity of 87 cg, 1 of them is active ingredient. In the quantity of interest,
... (1/87)·522 cg = 6 cg . . . is active ingredient
The remainder of that quantity, 516 cg, is inactive ingredient.
My answer is A. Hands down A.
