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nadya68 [22]
3 years ago
9

What is the value of z in the equation 3z − 7 = 14? 3 4 7 21

Mathematics
2 answers:
STALIN [3.7K]3 years ago
8 0
3z - 7 = 14    |add 7 to both sides

3z = 21    |divide both sides by 3

z = 7
rjkz [21]3 years ago
7 0

Answer:

Option C is correct

the value of z is, 7

Step-by-step explanation:

Given the equation:

3z -7 =14

Add 7 to both sides we get;

3z -7+7 =14+7

Simplify:

3z =21

Divide both sides by 3 we get;

z = 7

Therefore, the value of z is, 7

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Ipatiy [6.2K]
Substitute y = -2x + 4 into 7y = -14x +28

7y = -14x +28
7(-2x + 4)= -14x +28
-14x + 28 = -14x +28
0 = 0

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