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katrin2010 [14]
3 years ago
8

Please help me, thank you

Mathematics
1 answer:
NikAS [45]3 years ago
3 0

Answer:

X=30

Step-by-step explanation:

a  + b \: + c + d  = \: 360 \\ 3x - 10 + 2x + 8  + 3x + 4x + 2 \\  = 12x = 630 \\ x = 360 \div 12 \\ x = 30

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