In order to use the elimination method, we have to multiply the equation by some number, so that one of the variable has the same coefficient.
For example, multiplying the first equation by 3 and the second by 2 gives the following, equivalent system:
Now, we can subtract the two equations, and we will cancel (eliminate) the x variable:
Now that y is known, plug it into one of the equations: for example, if we use the first one we get
A principal is the amount of money you invested or deposited, so in this case, the principal is $3,000,
(and the net amount of money you earn is the interest, that is $300 in this one.)
Answer:
See explanation
Step-by-step explanation:
Consider the natural number
If is the natural number, then are next two natural numbers, so numbers and are three consecutive numbers.
Given three consecutive natural numbers, one of them is always even number and one of them is always multiple of 3, so the product
is divisible by 6.
Answer:
Step-by-step explanation:
If you would like to know what is the solution to the system of equations, you can calculate this using the following steps:
y = x + 12
y = 3x + 2
______________
y = y
x + 12 = 3x + 2
12 - 2 = 3x - x
2x = 10
x = 5
y = x + 12 = 5 + 12 = 17
The correct result would be (x, y) = (5, 17<span>); because both lines pass through this point.</span>