the answer is C. move the decimal place to the left 4 times since it is positive to the 4th power
3x - 7y = 9
3x - 9 = 7y
Add 9 to both sides.
3x = 7y + 9
Now subtract 7y from both sides.
3x - 7y = 9 (answer).
The standard form: Ax + By = C.
3x - 9 = 7y add 9 to both sides
3x = 7y + 9 subtract 7y from both sides3x - 7y = 9