Beau has decided to use the method of elimination to solve the system of equations as shown below.

2x+3y=15
x-3y=3

explain what beau's first step could be, and why the technique of elimination provides a solution to the system of equations.

3points
answer the question using complete sentences and/or mathematical statements. you will earn 1 point for a correct first step and up to 2 points for an appropriate explanation.

hint: look at the coefficients of each term. this will you identify which variable to eliminate.

what should the first step be?
explain - why did you identify that step?
how does it you get closer to a solution?

Step-by-step explanation:

The given equations are:

                    (1)

and                 (2)

Now, simply adding equation (1) and equation (2), we get

Now, substituting the value of x=6 in equation (2). we get

Thus, the values of x and y are 6 and 1 respectively.

In order to solve the system of solution, beau can see that in both  the given equations, coefficient of y is same and is with opposite sign, thus simply adding both the equations will eliminate y and she will get the value of x and then substituting the value of x in any of the equations, she can get the value of y. With this, she can get closer to the solution.

han when lo ahe whn hew anh ? ?

explanation:

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this