Answer:
One Solution
Step-by-step explanation:
x + 3y = 3
x - y = -3
4y = 6 Subtract to solve by elimination.
y = Divide by 4.
x - = -3 Substitute for y in the original equation.
x = - Add .
I want to say A because 168 tenths should equal 168 thousandths
Answer: 1/6
Step-by-step explanation:
Is a problem solving method that uses that fact that any number or expression can be multiplied by one without changing it's value.
So we have 299790000, we want to have only one digit in front of the decimal, 2.9979x10^9
hope this helps :)