б) 4 - 2y - (5 – 3y) = y — 1 - (у - 8)
4-2y-5+3y=y-1-y+8
-2y+3y-y+y=-1+8-4+5
y=8
д) у – 1+ (у — 2) = -4 - (у — 3)
y-1+y-2=-4-y+3
y+y+y=-4+3+1+2
3y=2 |:3
y=2/3
е) 3z + 5 = -(-27 - 7) + 18;
3z+5=+27+7+18
3z=47 |:3
z=47/3
б) 4 - 2y - (5 – 3y) = y — 1 - (у - 8)
4-2y-5+3y=y-1-y+8
-2y+3y-y+y=-1+8-4+5
y=8
д) у – 1+ (у — 2) = -4 - (у — 3)
y-1+y-2=-4-y+3
y+y+y=-4+3+1+2
3y=2 |:3
y=2/3
е) 3z + 5 = -(-27 - 7) + 18;
3z+5=+27+7+18
3z=47 |:3
z=47/3