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Q: What plus 15 equals 54?

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The answer would be 20.

It is: 126 plus 54 = 180

54 + 560 + 90 = 704

8x+39 = 2x-15 6x = -54 x = -9

The answer is 20. In each addition, the individual digits are added together (1+2+3+5+4 = 15)

93

346

54

It equals 285

no 3x2=6 then 4x-15= -60 so 6 added with - 60 = -54

The answer is 613.

15 + 14 + 14 + 11 + 2x + x = 75 Collect like terms 54 + 3x = 75 Subtract 54 3x = 21 Divide by 3 x = 7 ■

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