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MatroZZZ [7]
3 years ago
7

Please help and explain

Mathematics
2 answers:
storchak [24]3 years ago
4 0

Answer:

3x-1+x+7=54

4x+6=54

4x=48

x=12

pogonyaev3 years ago
3 0

Answer:

x = 12

Step-by-step explanation:

3x - 1 + x + 7 = 54

4x + 6 = 54

4x + 6 - 6 = 54 - 6

4x = 48

\frac{4x}{4}  =  \frac{48}{4}

x = 12

3(12) - 1 + (12) + 7 = 54

36 - 1 + 12 + 7 = 54

35 + 12 + 7 = 54

35 + 19 = 54

54 = 54

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