3X=83 X÷72 =167125÷X=3104X =30% X×53 =20×4153 X = 7225 X-0
25=41 50% X + 54 X = 3
6 X - 15%X = 68 X-27 X =43 X+83 X=121 25% X + 15%X = 546X+5 =13
4 4 X-6=38 43 X+41 =83 4 X-3 ×9 = 29 5X-3×215 =75 4X- 6×32 =2 0
36× 5- 34 X = 35 X - 0
8 X = 16+6 23 ( X - 4
5) = 7 32 X÷41 =12 2(X-2
6)=8 4+0
7X=102 X×( 16 + 38 )=131212 X - 25% X = 10 20 X– 8
5 X - 45 X -4= 21 二、简便运算
(712 - 15 )× 60 36×3435 0
65×101 (1
125)×8 5
48-( 9
52 )2538 ×8 24×(1211 -83 -61 -31 ) 2
48 257 ×103-257 ×2-25747 ×613 +37 ×613 27
7 97 ÷511+97 ×115 2
5×32×1
25 710 ×101- 71035 × 99 + 35516 ×137 -53 ÷713 4
8+78 ×0
36 ×12
5 ×8 2
5×32×1
25÷32 ×0
2 ÷3 15
25 ÷ 4 89 ×89 ÷89 ×8983 ×3÷83 ×3 146
5- (23+46