Question

Each row. column and square can contain each number 1-9 exactly once. the squares that contain letters match with the system of equations to solve

please help me with all of them

Answer 1

A. (5,4)

B. (6,-4)

C. (-5,3)

D. (8,12)
E. (3/2,6)
F.(405/19,1601/19)

G.(9,2/3)

H. (7, -3/2)

I. (-6,5)

Explanation:

For all of these you are going to solve one of the equations for one of the variables. A lot of them are already solved (One equation has the variable already equal to the other side like B has -2x+8=y.

Then you are going to take that value and substitute it into the other equations.

Once you get the answer for that variable, plug the answer into the other formula and solve.

Finally, check your answers by plugging both variables into the formula.

For example A,

You already have one of the equations solved so you would plug in 3x-11 for y in the bottom equation to get 2x-3(3x-11)=-2

Now distribute and solve 2x-9x+33=-2

2x-9x=-7x and -2-33=-35

Divide both sides by -7

x=5

Now plug 5 into the first equation of y=3x-11 and solve to get y=3(5)-11=15-11=4

Finally, check your work by plugging your numbers into the first equation you worked with 2(5)-3(4)=-2. 10-12=-2. -2=-2

Repeat the steps above for the rest of the problems