3.6(2y-1)-4(3y-1)-5.5(x+3)+7(x+y-5)=7,2y-3,6-12y+4-5,5x-16,5+7x+7y-35=2,2y-51,1+1,5x ----------------------------------------------------------------------------------------------------------------------------- 2.6(4-2b)-7.6(a-2)-5(6b-a+20) =10,4-5,2b-7,6a+15,2-30b+5a-100=-74,4-35,2b-2,6a---------------------------------------------------------------------------------------------------------------------8x-3x-6x= - 7.3x=7,33x-2.5x+3+x - 1.3 = 01,5x=-1,7x=-1 2/15x-4.5x+3x-4.7+5.8 = 00,5x=4,7-5,80,5x=-1,1x=-2,2-2x +5.5x-4.1+8 - 0.5x = 03x=4,1-83x=-3,9x=-1,3