Question

complete as lacunas
7x__=15x
6w___=2w
-10y___=5y
90d___=90d+1
55e____=0
8y____=2y+1
13h+12____=5
9p____=1
-20t+5___=2t
30x-18___=x

Answer 1

7x+8x=15x
6w-4w=2w
-10y+15y=5y
90d+1=90d+1
55e-55e=0
8y-6y+1=2y+1
13h+12-13h-7=5
9p-9p+1=1
-20t+5+22t-5=2t
30x-18-29x+18=x

Tenha um bom domingo de estudos!