x squared by 3x
5÷665=
(2x-5)[5(x+1)+2(x+2)]-4x(5x-4) =
simplify 2r+6+4t+5r+4t
simplify 3v+7+5v
3÷363=
4 - 2² + 5 ÷ 6 x 4 = 2
3a+a
8. Six different mathematics books and seven grammar books are to be arranged on a shelf. How many possible arrangements can be ma...
