5 2x 3 21 2 July 8, 2019 16 32 64 128 5 2x 3 21 2 solve the equation 5 2x 3 21 2 solve 21 3 7 2x )= 5 2 x 9 21 7 2 5 2x 3 4 3 2x 1 )+ 21 5 3x 2 )+ 1 2x 5 5 3x+2=25
