Answer:
To get system B, the SECOND equation in system A was replaced by the sum of that equation and the FIRST equation multiplied by FOUR. The solution to system B IS de same as the solution to system A
Step-by-step explanation:
x-y=3 equation 1
-2x+4y=-2 equation 2
so, multiplying by four the equation 1 we have
4x-4y=12 equation 3
later sum equation 3 and equation 2 we have
2x=10
Answer:
-1: -1, 1
-12: -12, -6, -4, -3, -2, -1, 1, 2, 3, 4, 6, 12
Step-by-step explanation:
lemme do only California, so you see how's done.

Answer:

Step-by-step explanation:




Common factor:-

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