Mathematics, 21.01.2021 05:30, antoinetteee03

Hey, here are all the problems. Im not sure how to do this and my teacher isnt giving me much time. Help would be apricated (9x + 5) - (-8x - 11)
(-5x - 7) + (-2x + 6)
(-x - 9) - (5x + 4)
(3x - 4) - (x - 7)
(7x + 4) - (5x + 5)
(2x - 3) + (7x + 11)
(-4x - 5) + 2(3x - 4)
2(6x - 7) - (2x + 3)
(5x + 4) - (5x + 12)

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Hey, here are all the problems. Im not sure how to do this and my teacher isnt giving me much time....