小学生的方程式问题

(1) 3× 2 χ-50 = 70, (4), (1) 3× 3 χ+2× (10-χ) = 48,

(2) 4×6χ+30 = 150 , (2) (2χ-15)-5 = 31 ,

(3) 2×(χ+8) = 28 , (3) 4×(25-2χ)-2×3χ = 16 ,

(4) 5×(28-2χ) = 80 , (4) 500+(100-5χ)×3 = 530 ,

(5) 4×(3χ+6) =156 , (5) 600-5×(2χ+60) = 120 ,

(6) (64-3χ)×8 = 32 , (6) 6×2χ+15×(15-2χ) = 45 ,

(7) (10χ-90)×3 = 120 , (7) 4×5χ-(3χ-24)×10 = 10 ,

(8) (9χ+15)×4 = 276 , (8) 1000+(5χ-260)×12 = 220 ,

(9) 3×(56-2χ)+χ = 103 , (9) (18-5χ)×2+125 = 21 ,

(10) (3χ+5)×4-38 = 174 , (10) 3×(4χ-25)-100 = 53 ,

(11) 200+(85+2χ) = 325 , (11) 200-(3χ-50)×3 = 53 ,

(12) 344-(135+3χ) =146 , (12) 100+(120-4χ)×2 = 60 ,

(13) 5χ+(100-χ) = 196 , (13) 580+(5χ+40)×4 = 800 ,

(14) 7χ-(35-χ) = 235 , (14) 330-3×(100 — 2χ) = 276 ,

(15) 10χ+(196-7χ) = 364 , (15) (28-4χ)×5+6χ×3 = 0 ,

(16) 375-(5χ+143) = 107 , (16) 2000-(8χ+500)×2 = 20×6 ,

(17) 437-(529-3χ) = 142 , (17) 24+(9χ+10)×10-50χ = 4×56 .