а) 7(4x + 2) – 8(5 – 3x)= 28х+14-40+24х=52х-26= 26(2х-1)
б) –6(8x – 5) + 7(4 – x)= -48х+30+14-7х=44-55х=11(4-5х)
в) –(–2x + 7) – 3(x –1)= 2х-7-3х+3= -х-4=-(х+4)
г) 2(3 – 6c) – 9(2 + 3c) +3(13c – 4)= 6-12с-18-27с+39с-12=-12
д) 16(c – 3) + 8(5 – 2c) – (10c – 8)= 16с-48+40-16с-10с+8=-10с