Flora made 9 withdrawals of $70 each from her bank account. What was the overall change in her account?
1 answer:
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2x-y=1
-2x -2x
-----------------
-y=-2x+1
Multiply by -1
y=2x-1
x+y=2
-x -x
------------
y= -x+2
-2x -2x
-----------------
-y=-2x+1
Multiply by -1
y=2x-1
x+y=2
-x -x
------------
y= -x+2