A)3x-15y-14y+21x=24x-29y
В)-11-2a-3(1-10a+12)=-11-2a-3+30a-36=28a-50
Д)15a-12b-15x+18y-4a+4b-8x-12y+32-2x+2y+2a-2b+24+5a-6y+7a+8b+11=25a-2b-25x+14y+67
Е)7a-35b-6b+24a=31a-41b
Ж)-14-3a-4(a-35+15a)=-14-3a-4a+140-60a=-67a+126
И)6a+10b-6x+14-15a+6b+3x+6y-4b+4a+4x-4y+36+2a-3b-4x+7y+10=-3a+9b-3x+9y+60=-a+3b-x+3y+20
Б)-3x-15y-20y+40x+12x-17y=49x-18y
Г)-2x+6y+16-6y+2x=16
Е)-9x+9y-14y+28x-17x+12y=7y+12x
З)-21a+15b+27-15b+21a=27