Question

Simplify combining life items
1) 42a‐52+8a-15b
2) a-(a-b)‐(2b‐a)
3) 2x-3y-2xy-(2x-3y+xy)+6xy+y-x​

Answer 1

Answer:

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Step-by-step explanation:

1. 42a‐52+8a-15b

sol : 42a‐52+8a-15b

42a+8a-15b-52

50a - 15b-52

2. a-(a-b)‐(2b‐a)

sol : a-(a-b)‐(2b‐a)

a -a+b -2b- a

-a-b

3. 2x-3y-2xy-(2x-3y+xy)+6xy+y-x

sol : 2x-3y-2xy-(2x-3y+xy)+6xy+y-x

2x-3y-2xy-2x+3y-xy+6xy+y-x

2x-2x-x-3y+3y+y-2xy-xy+6xy

-x+y+3xy