8(3a-b)-4(a-7b)=24a-8b-4a+28b=20a+20b
A) 5 (c-6)-10=5c-30-10=5c-40
б)12-8 (-4-x)=12+32+8x=8x+44
в)-6 (x-7)+14 (t+6)=-6x+42+14t+84=8t+126
г) 32-(х-у)=32-х+у
д)-(-13х-2t-7y)+5=13x+2t+7y+5
е) -3,5-(-х-3,5)=-3,5+х+3,5=х
ж)-(-с-у)+(с-t)=с+у+с-t=2c+y+t
з)6 (2-3х)-(5+х)-4 (3х-2)= 12-18х-5-х-12х+8=15-31х
11-8=3 , 13-5=8, 17-9=8, 16-7=9, 6+6=12, 7+8=15, 8+6-5=9, 5+6-5=6.