4. Раскройте скобки и приведите подобные

2,6(x-y)+8x = 2,6x-2,6y+8x = 10,6x-2,6y

-6(x+8y)-7x = -6x-48y-7x = -13x-48y

-2,2(8-2c)-5c = -17,6+4,4c-5c = -17,6-0,6c

-4(x-2y)-6(2x+3y) = -4x+8y-12x-18y = -16x-10y

2(x-2y)-4(7x+3y) = 2x-4y-28x-12y = -26x-16y

-(6x-6y)+8(8y-2x) = -6x+6y+64y-16x = -22x+70y