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andreyandreev [35.5K]
3 years ago
7

Solve the system of equations.

Mathematics
1 answer:
Zepler [3.9K]3 years ago
3 0

Answer:

the correct answer is  a. (x = 2, y = 1, z= -2).

you can try inserting each value to all three equations and you'll see that only "a" satisfies all equations.

Step-by-step explanation:

4x+4y+3z=6

4(2)+4(1)+3(-2) = 12-6 = 6

4x + 7y + 5z = 5

4(2)+7(1)+5(-2) = 15-10 = 5

5x + 3y + 3z= 7

5(2)+3(1)+3(-2) = 13-6 = 7

now, you can clearly see that all the equations are satisified with the help of the employment of the three values x=2 , y=1, and z = -2 which makes A the correct answer.

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