Question

Addition of 2x-5y+7,3x+5y-4 and -9x+4y is​

Answer 1

Answer:

Adding them

= 2x-5y+7+3x+5y-4-9x+4y

= -4x+4y+3

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Answer 2

2x - 5y + 7 + 3x + 5y - 4 + ( - 9x + 4y )

- 5y + 5y gets cancelled .

5x + 3 ( - 9x + 4y )

5x + 3 - 9x + 4y

- 4x + 4y + 3