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X － 27 X=43
2X + 25 = 35 70%X + 20%X =
X ×53=20×41 25% + 10X = 5
4
X - 15%X = 68 X ＋83X ＝121 5X －3×215＝7
5 32X ÷41＝12
6X ＋5 = 8
3
4143=+X 3X=83
X ÷72=167 X ＋87X=43 4X －6×3
2
=2
125 ÷X=3
10 53 X = 7225 98 X = 61×5116
X ÷ 356=4526×25
13 4x －3 ×9 = 29 21x + 61x = 4
103X －21×32=4 204
1
=+x x 8)6.2(2=-x
6X ＋5 = 25 X-13 X=310 4χ－6＝38 ×5- 34 x = 3
5
5X=1915 218X=15
4 X ÷54=281
5 2
3 (x- = 7
32X ÷41=12 53X=7225 98X=61×51
16 1
2 x- 25%x = 10
X ÷356=4526÷2513 =41 4
X
=30% x- = 16+6
4+=102 32X+21X=42 X+4
1
X=105 20 x – = X-
83X=400 =8 X
36 = 43 x- 4
5 x -4= 21
X+37 X=18 X ×( 16 + 38 )=13
12 x －=6
5 X ＋25%X=90 x ×32+21=4×83 X －7
3
X ＝12 5 X －×5＝8 X －37 X= 89
