Question

pls guys fast solve this ​

Answer 1

Answer:

A) (16x +20y) -(7x+9y)

brackets open after minus sign the sign will be change of the digits which is inside the bracket

16x+20y-7x-9y

16x-7x+20y-9y

9x+11y =ans

B) 3x²-7b -(3x²+7b)

3x²-7b-3x²-7b

3x²-3x²-7b-7b

3x²&3x² cit bcs different sumbol -+ cut of the same no. -7b-7b =14b

ans. 14b

Answer 2

Answer:

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