Упростите выражения 2(3-6с)-9(2+3с)+3(13с-4) -4(2d+5)+7(2+5d)-(d-6)...

Question

Упростите выражения
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)

Answer 1

1. 6-12с-18-27с+39с-12=-24
2. -8d-20+14+35d-d+6=26d
3.16c-48+40-16c-10c+8=-10c
4.-84 +24d-63d+45-45-24d=-84-63d