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[" Simplify these expressions and find t...

[" Simplify these expressions and find their values,if "x=3,a=-1,b=-2" ."],[[" (a) "3x-5-x+9," (b) "2-8x+4x+4],[" (c) "3a+5-8a+1," (c) "10-3b-4-5b]]

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Simplify these expressions and find their values if x=3,a=-1,b=-2: 3x-5-x+9

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