As stated in the question, it equals 1.
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n/27=2n/27*27=2*27n=54
n + 18 = 27 subtract 18 to 18 and 27 18-27=9 n = 9
1: (n-2)2 2: n-22 3: n+2n-2 4: n-2n+2 If I understand your question correctly (it is really confusing) then none of the expressions 2 3 or 4 equal the first expression.
n=10/7. i did this one mentally. but are you sure its 8n minus negative 4n or is it 8n minus 4n? 8n- -4n does not equal 8n-4n 8n- -4n is the same as 8n+4n
Suppose the number is n, then n/7 - 1 >= 2 Add 1 to both sides: n/7 >= 3 Multiply both sides by 7: n >= 21