Simplify : 3x – [4y – {9x − (x − y)}]
please help me it is emergency my class is going on
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Step-by-step explanation:
3x-[4y-{9x-x+y}]
3x-[4y-{10y-x}]
3x-[4y-10y+x]
3x-[-6y+x]
3x+6y-x
2x+6y
2(x+3y)
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