Help me please!.!..!!.!.!.!

Question

Help me please!.!..!!.!.!.!

---

Answer 1

1. A) 5m
Б) -3.3m
В) -2a - 1b

2.
A) a+a-b-2a+2b+2b
=3b
Б) 8x - 6-2+ 4x-12x-4
=-12
3.a) 5x-3=4x+7
5x-4x = 7 + 3
1x=10
X=10
Б) -3x+2.4 = 5x-3
-3x -5x=-2.4 -3
-8x = -5.4
X= 0.675
Дальше лень, очень много решила