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LenKa [72]
4 years ago
15

For the following questions, use the system of equations. 3x + 2y = 14, 2x - 4y = 4. A. Solve the system of equations using eith

er the substitution method or the multiplication/addition method? B. Check your solution by writing the system as a matrix equation and using the inverse matrix.
Mathematics
1 answer:
Irina18 [472]4 years ago
8 0

Answer:

not the matrix equation but this works

x=4, y=1

Step-by-step explanation:

2x-4y=4             (original equation)

2(3x+2y=14)       (do this so that you can subtract or add- it's still equal)

2x-4y=4             (original equation)

6x+4y=28          (after multiplying)

8x=32                (add 2 equations together to cancel out 4y, can also subtract)

x=4                     (division)

2(4)-4y=4           (substitution)

8-4y=4               (multiplication)

4y=4                  (addition/subtraction)

y=1                     (division)

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Is 6 squared plus 9 sqaured <br> rational?
iris [78.8K]
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hope this helps
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