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2. 5x + 3 - x + 1 = 4x + 2
= 3-9-17x+4x+35y+23y
= -6-13x+58y
(42n +35m +7) - (50m -20n +9) = 42n +35m +7- 50m +20n -9
= 42n +20n + 35m -50m +7 -9
= 62n -15m -2
hasil pengurangan ( 5x +3 ) oleh (x -1) adl
(5x +3) - (x-1) = 5x + 3 - x +1
= 5x - x + 3 + 1
= 4x + 4