x + 15 = 54
x = 54 - 15 = 39
ANSWER: 39 <-------
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 ■