(83) 2x÷4=12 (84) 10x÷9=20(85) 4.5x÷10=1.8 (86) 0.6x÷64=0.3 (87) 2.6x÷4=3.9(88) 4x÷12=1.6 (89) 39x÷6=2.6 (90) 10x÷20=0.9(91) 17x+11x=140 (92) 13x+19x=320 (93) 8x+7x=270(94) 14x-9x=55 (95) 17x-11x=12 (96) 16x...