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2(3-6с) -9(2+3с) +3(13с-4)
-4(2d+5)+7(2+5d)-(d-6)
16(c-3)+8(5-2c)-(10c-8)
-12(7-2d)-9(7d-5)-3(15+8d)
-5(4b+3)-(18+d)+15(1+2d)
2(3-6с) -9(2+3с) +3(13с-4)
-4(2d+5)+7(2+5d)-(d-6)
16(c-3)+8(5-2c)-(10c-8)
-12(7-2d)-9(7d-5)-3(15+8d)
-5(4b+3)-(18+d)+15(1+2d)
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Answers & Comments
2)-4(2d+5)+7(2+5d)-(d-6)=-8d-20+14+35d-d+6=42d
3)16(c-3)+8(5-2c)-(10c-8)=16c-48+40-16c-10c+8= -10c
4)-12(7-2d)-9(7d-5)-3(15+8d)=-84+24d-63d+45-45-24d=84-63d
5)-5(4d+3)-(18+d)+15(1+2d)=-20d-15-18-d+15+30d= 9d-18