Which equation can be solved by using this system of equations?
2 answers:
Answer:
The third option
Step-by-step explanation:
One thing that we can do with two equations in a system of equations is add them together. If we do that with these equations, we get
In the addition, I simply combined like terms (where the variable was the same, and the x was to the same degree, e.g. -5x^3 + 6x^3 are both to the third degree, and the result is x^3). If we make y 0, our answer is the third option.
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1. No answer ( may be due to incorrect question)
2. x = -3
y = 4
3. x= 4
y = 2
4.x = -63/40
y= -19/20
Step 1
Multiply equation 1 by the coefficient of x in equation 2
Multiply equation 2 by the coefficient of x I'm equation 1
(after completing this step you will derive equation 3 and 4 )
Step 2
Subtract equation 4 from equation 3
Step 3
Divide both sides of the equation by the coefficient of y
Step 4
substitute your value for y in equation 1 or 2
(after this you will derive the values of x)
Note : This method is for the Elimination of x
I hope it helps
