Which is the best first step and explanation for solving this system of equations?
2 answers:
Answer:
A ) subtract the second equation from the first equation
Step-by-step explanation:
2x + 3y = 7
2x - 4y = -5
subtracting the second equation from the first equation we get,
7y = 12
y=12/7
This is the correct option
Answer:
A ) subtract the second equation from the first equation
Step-by-step explanation:
Let's consider the following system of equations.
2x + 3y = 7
2x = 4y - 5
If we subtract the second equation from the first equation, we get:
2x + 3y - 2x = 7 - (4y - 5)
3y = 7 - 4y + 5
7y = 12
y = 12/7
Then, we can use any of the original equations and solve for x.
2x = 4y - 5
2x = 4(12/7) - 5
x = 13/14
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