correct
9x - 20 = 61 Add 20 to both sides: 9x = 81 Divide both sides by 9: x = 9
81
61 67 71 73 79.
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The GCF is 1.
-20
81 grams is equal to 2.85719092
The answer is 1,3,9,27,81. 81*1=81 3*27=81 9*9=81 27*3=81 81*1=81
9x9=81
81/20 = 4.05
Because 1-20 is smaller than 81-100. The bigger the number, the harder it is to be prime.
9 to the power of 2 = 81