are you trying to add them all together if so here how that would work
4x-3x=1x
2y-(1)y =1y(if the y is alone theirs a 1 always infront of it)
-14-8=-22
The answer is true. Pretty darn sure
Answer: 
Step-by-step explanation:
Given
Equation is 
Mila uses the first step as multiplication to make the coefficient of x, 1
Mila maybe have multiplied the whole equation by 2 i.e.
Answer:
Step-by-step explanation:
The problem statement tells us ...
8x = y +3
7x = y -4
Subtracting the second equation from the first gives ...
x = 7
Then ...
y = 7x +4 = 7·7 +4 = 53
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