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1)x=3/4 - 7/12x = 9/12 - 7/12x= 2/12x = 1/62)x=1/9 + 1/6x = 2/18 + 3/18x = 5/183)x = 3/8 + 3/5 x = 15/40 + 24/40x=39/404)x = 7/12 -  5/24x = 14/24 - 5/24x = 9/24x = 3/85)y = 1/3 - 2/7 y= 7/21 - 6/21y = 1/216)x = 7/9 + 1/6x = 14/18 + 3/18x = 17/187)y = 5/32 + 3/8y= 5/32 + 12/32y = 17/328)y = 1/2 - 2/5 y = 5/10 - 4/10y = 1/10