Answer:the length is equal to 18. 2l+2w= 12+?=48. 48-12=36, 36/2=18
Step-by-step explanation:
6x-10-8=8
6x-18=8
6x=8+18
6x=26
x=4.33
2 times 4 equals 8, and 31 plus 8 equals 39. 39 is your answer. Hope this helps!
I believe the first one 451 subtract