T=12
(12+8):2=20:2=10
t=18
(18+8):2=26:2=13
<span>0.9(4y-2)=0.5(3y-4)+4.4</span>
<span>3.6у-1.8-1.5у+2-4.4=0</span>
<span>3.6у-1.5у=4.4-2+1.8 </span>
<span>2.1у=4.2</span>
<span>у=2.</span>
<span>Ответ: 2</span>
1) АВ=|-3|+2=3+2=5
2) AB=|-5|+(-1)=5-1=4
3) AB=|-2|+0=2+0=2
4) AB=|-7|+(-4)=7-4=3
Решение во вложении. Ответ:121 504руб