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Sauron [17]
3 years ago
14

I need help on this please​

Mathematics
1 answer:
larisa [96]3 years ago
4 0

Answer:

c) infinite

Step-by-step explanation:

z - y = 12

-3z + 3y = -36

<h3>simplify the first equation to find z in terms of y</h3>

z - y = 12

<em>add 12 to both sides of the equation</em>

z - y + y = 12 + y

z = 12 + y

<h3>now, substitute z for 12 + y in the second equation.</h3>

-3z + 3y = - 36

-3(12 + y) + 3y = -36

-36 -3y + 3y = -36

-36 = - 36

the answer is infinite solutions, because no matter what y and z are, -36 will always equal -36

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