Question

7a-9b+6a-4b=
a+b-c-b-c+2c-a=
5x-11y-9+20x-1-y=
-6m+8n+5-m-n-6m-11=
-a+b+2b-2c+3a+2c-3b=
-81x+19y-30z+6y+80x+x-25y=
15a2-6ab-8a2+20-5ab-31+a2-ab=
-3a+4b-64+81b-114b+31a-a-b=
-71a3b-84a4b2+50a3b+84a4b2-45a3b+18a3b=
-a+b-c+8+2a+2b-19-2c-3a-3-3b+3c=

Answer 1

Respuesta:

1=13(a-b)

2=b-d

3=-13m+7n-6

4=2a

5=-30z

Explicación paso a paso: