1) 2(а+3b)-(c-d) 2) 0.3(3a-2)-(b+2) 3) 1.5(4a-3)-5(b+2)
1)2a+6b-c+d 2)0.9a-0.6-b-2 [email protected] [email protected] 3)6a-4.5-5b+10 6a-5b-4.5+10 6a-5b+5.5