1). 2 - 3 = -1
2). 3 × -1 = -3
3). 4 - (-3) = 7
4). 3 × 7 = 21
5). 4 - 21 = -17
6). 6 - (-17) = 23
(х+у-в)*5 = 5х+5у-5в
-8(д-с-а) = -8д+8с+8а
(3х-5в+6)*(-2) = -6х+10в-12
-(2а-3в-1) = -2а+3в+1
-3(х-0,2) = -3х+0,6
5x+10-12+3x -3x+5x-2
5x+3x-3x+5x=-10-12-2
10x=-24
-x=24:10