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Mathematics, 25.02.2021 22:40 timozy95

Hello, can someone help with these problems. Simplify:
3x+9-4x
2(3-4x)+5
(3x+5)- 2(8x+3)
(2x+3y-4) - (3x+5y+6)
3(2x-4y+8) -5x -4
Thx!!

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Hello, can someone help with these problems. Simplify:
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