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a.12x – 24 -6 – 21x = -9x -30
b. -15x + 12 – 24x + 16 = 39x + 28
c. 8x + 5 – 18 + 12x = 20x – 13
d.15y + 35 – 12 – 8y = 7y – 23
e.6a + 12b – 6a +9b = 21b
f.-4b -12a +2a -6b = -10b -10a
g.10x + 15y – x +2y = 9x+17y
h.12a – 18b +6c +12a +8b -4c = 24a -10b +2c
i.24x – 16y +8 -10x +2y -6 = 14x -14y +2
j.9x – 63y +5y – 2x = 7x 58y 5x + 7y – 8y -8 + 6x -2y = 11x -3y -8
j. 5x – 6y – 4 – 4x – 4y + 6 = x - 10y +2