Question

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Answer 1

3.4x + 5.7x + 6.6x - 4.7x = 11x

x = 3.6; 11 * 3.6 = 39.6

x = 0.8; 11 * 0.8 = 8.8

x = 10; 11 * 10 = 110

Answer 2

1) 12, 24 + 20,52 + 23,76 - 16,92 = 39,6 
2) 2,72 + 4,56 + 5,28 - 3,76 = 8,8 
3) 34 + 57+ 66 - 47 = 110