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Sagot :
Answer:
21y = 23
Step-by-step explanation:
1. 25y-30 = 4y-7
2. 25y-4y = 30-7 (move like terms over to each side)
3. 21y = 23
4. Approximately 1.0952381
a(b-c) = axb - axc
25y - 30 = 4y - 28
25y - 30 + 30 = 4y - 28 + 30
25y = 4y - 2
25y - 4y = 4y - 4y - 2
21y/21 = 2/21
X = 2/21
25y - 30 = 4y - 28
25y - 30 + 30 = 4y - 28 + 30
25y = 4y - 2
25y - 4y = 4y - 4y - 2
21y/21 = 2/21
X = 2/21
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