Question

$2z - (7 - 5z) - 21 = 0$
give the answer step by step
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Answer 1

Answer:

4

Step-by-step explanation:

2z - (7-5z) - 21 = 0

2z - 7 + 5z -21 = 0

7z -28 =0

7z = 28

z = 4 ans

Answer 2

Answer:

Hope it helps

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