Answer:
0
No other rational number is its own reciprocal. We know that there is no rational number which when multiplied with 0, gives 1. Therefore, rational number 0 has no reciprocal or multiplicative inverse.
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13
Step-by-step explanation:
2x-4=4x-30
-2x= -26
-2x/2 =26/2
x=13
5 , 10 , 15 , 20 , 25 , 30 , 35 , 40 , 45 , 50 , 55 , 60
6, 12, 18 , 24 , 30, 36 , 42 , 48, 54, 60
30 and 60
x = 28