plzz give all ans in detail
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6. 6xy and -8xy
7. mn- 3y
8.1/2xy
9. 5+5z
10. 60a-20a-8a+42-20
=32a +22
3yx-5xy+5x-8x-6y+12y+8
= -2xy-3x+6y+8
11.6*3*-3-8*3-7*-3
=-78+21
= -57
12.3*-5*-2+(-5)^2-(-2)^2-2*-5+3*-2
=55
13. Area of rectangular plot= l*b
=65*25
=1625
14. Area of rectangular garden=l*b
550=l*25
=22m
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