Answer:
i need this for a challenge
Step-by-step explanation:
They are all correct except in 5), 4+8 is 12, not 13.
The importance of finding new sources of energy,Are we are running out of resources on our planet. There are so many resources that are reusable. an ones that only have a certain amount of an we are running out of it. so if we find new sources of energy we could save our planet it an stop it from wasting an killing out planet
Step-by-step explanation:
x+13÷2×2=4×2
x+13=8
x+13-13=8-13
x=8-13
x=-5