Answer:
n= -75
Step-by-step explanation:
After setting up your equation it should look like this: 35+0.8n=43-(-7-n)
First step is to remove the parenthesis: 35+0.8=43+7+n
Then, you add 43+7 : 35+0.8n=50+n
After that, move the the variable to the left side and change its sign: 35+0.8n-n=50
Then do the same with 35 instead of the variable: 0.8n-n=50-35
Collect like terms: -0.2n=50-35
Subtract the numbers: -0.2=15
Divide both sides by -0.2: n=-75
Hope this helps.