Three million three hundred eighty eight thousand one hundred ninety eight.
He used the property of addition. Hope this helps. Please mark me as brainliest if I am right.
Answer:
-0.1, 0, 0.8, 1.2, 1.6
Step-by-step explanation:
I like the substitution method. Which is when you make one equation equal only x or y and plug it into the other equation)
There is also the graphing method. If you graphed it, it might not be quite as accurate (at least on hand, on computer you would be pretty exact)
Then there is the elimination method. You multiply one of the equations by a coefficient so that you can eliminate x or y from the equation.
the answer is 80 take the positive and negative and use the sign change rule
