63.70%X + 20%X = 3.6 64. 12x=300-4x

65. 7x+5.3=7.4 66. 3x÷5=4.8

67. 30÷x+25=85

69. 6x-12.8×3=0.06

71. 3(x+0.5)=21

73. 6x-3x=18

75. (x-140)÷70=4

77. 4(x-5.6)=1.6

68.1.4×8-2x=6 70. 410-3x=170 72. 0.5x+8=43 74. (200-x)÷5=30 76. 0.1(x+6)=3.3×0.4 78. 7(6.5+x)=87.5 79. (27.5-3.5)÷x=4 80. 4X+9=2X+13

81. 3.5X+1.8=12.3 82. 13X+8=14X+4

83. X-0.8X=10

85. 12-4X=3X-2

87. 4X+9=5X+4

89. 11X+9=12X+3

91. 12-3X=18-7X

93. 3(2X-1)=4(3-X) 84. 4X-7=3X-1 86. 12-3X=7X-18 88. 6X-7=2X-1 90. 12-5X=2X-2 92. 6(X+4)=30 94. 12-5X=2X-9

95. 12-3X=18-2X 96. 5(X-2)=4(2-X)

97. 2(X+3)=3(X+1) 98. 12-3X=7X-18

99. 12-4X=3X-2

100. 4X+3=3X+8