Question

СРРОЧНО С 12- 17 ПРИМЕРЫ

Answer 1

#12
-0.3x+2-5+0.2x=-0.1x-3
#13
1/5y-3y+4/5+4=-2 4/5y+4.8
#14
-7.2+0.3x+2.7x=-7.2+3x
#15
-21x-21y-3x+3y=-24x-18y
#16
-4mn+2n-6m+2mn=-2mn+2n-6m
#17
1/3 ab - 1/3 b^2-a+3ab=3 1/3ab-1/3b^2-a