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Answer:
Step-by-step explanation:
What is the X
3x +15 and 2x + 20
assuming that the question is an equation
3x + 15 = 2x + 20
3x - 2x = 20 - 15
x = 5
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check
3 * 5 + 15 = 2 * 5 + 20
30 = 30
the answer is good