X : y = 5 : 3 and x + y = 56 Work out the value of x - y
2 answers:
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Answer:
Step-by-step explanation:
1. As you can see, is equal to the other quadratic equation
.
2. Then, this would the same as write the quadratic equations as following:
3. And then set them equal to each other, as you can see below:
Substituting, you obtain:
3. Keeping the above on mind, you can set up the given equations as a system of equations as folllowing:
X * (x-2) = x*x - 2*x = 
- 2x