5x 7 3x 21 July 8, 2019 16 32 64 128 5x 7 3x 7 )= 211 Solve the equation 7 5x 3x 21 Resolver 5x 7 6x 15 3x 21 5 x 7 = 35 3(7x - 2) + 5x + 21
