2 Fill in the blanks
A system of equations and its solution are given below.
System A
I - y = 7
-3. + 9y = -39
Solution: (4, -3)
Complete the sentences to explain what steps were followed to obtain the system of equations below.
System B
I - y = 7
by = -18
times the
To get system B, the
equation in system A was replaced by the sum of that equation and
equation. The solution to system B the same as the solution to system A.
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