(X,y)=(4, -1)
Hope this helps! :))
Answer:
Step-by-step explanation:
Please find attachment for step by step explanation.
Answer:
Equation is 
0.125 gallons of the 35% acid solution Eli should add.
Step-by-step explanation:
Given : Eli wants to combine 0.5 gallon of a 10% acid solution with some 35% acid solution to make a 15% acid solution.
To find : Equation can you use to determine how many gallons of the 35% acid solution Eli should add?
Solution :
Let x be the gallons of the 35% acid solution.
According to question,
For 0.5 gallon of a 10% acid solution = 
For x gallon of a 35% acid solution = 
For (0.5+x) gallon of a 15% acid solution = 
The equation form is

Solving the above equation,




Therefore, 0.125 gallons of the 35% acid solution Eli should add.
The equation is 
Step-by-step explanation:
6x + 11 = 7x + 14
7x - 6x = 11 - 14
x = - 3
Hope it will help :)