consider some system of sets S in Y and the ring R(S) generated by S, i.e, R(f^-1(S)), coincides with f^-1(R(S)) . Prove that the ...
p+q =19
3p-q =5
a=8
b=10
a%b & b%a
2+1 ans
5a-4b-c=3
4a-6b+2c=0
a+b-5c=0
solve for a,b,c
0.68 ? = 0.092
what is the value of 3x-x+6=14
597×15
What is the hypotenuse if perpendicular of a triangle is 3cm and its base is 4 cm
46*78