1. If 3 + 4 =7 , then 7=3+4 what property is this 2. If m
2 answers:
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Correct option is:
B. 2
<h2>Explanation:</h2>
From the double number line shown we can set:
So we can solve this problem by using either equation (3) or (4). So, choosing equation (3):
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The system of the equation doesn't give the solution at (-3, -6).
<h2>Given to us</h2>- -4x+y = 6
- 5x-y =21
-4x+y = 6
solve for y
5x-y =21
substitute the value of y in equation 2,
Substitute the value of x in equation 2,
We can see that the solution of the two equations is at (27, 114). Also, it can be verified by plotting the line on the graph.
Hence, the system of the equation doesn't give the solution at (-3, -6).
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