x:10=: 0.4:x=1.2:2 x: =6: 8:x=14131113281233654= :=:x 0.8:4=x:8 :x=3:12 1.25:0.25=x:1.6 = = 25449x2.4xx3234.5624111313 = 45:x=18:26 2.8:4.2=x:9.6 :x=: 2.8:4.2=x:9.6 x:24= : 3X= 251084438x2.2110.61.5314114251143511: :=x: 0．6∶4＝2.4∶x 6∶x＝∶ ＝x ∶＝x∶ ∶＝∶x x∶＝0.7∶ 531242512536142548612 11164.683x223431.3∶x＝5.2∶20 x∶3.6＝6∶18 ∶＝∶x ＝ ＝ X－ X= 2X + = x- x -4= 21 755532090.2x8644 70%X + 20%X = 3.6 X× 31=20× 54 25% + 10X = 435215 X - 15%X = 68 X＋X＝121 5X－3×＝ X÷＝12 5873421313 X÷2=7 X＋7X=3 4X－6×2=2 12 ÷X=3 8 X = 1×16 X÷ 6=26×13 6X＋5 =13.4 X5104487168439651354525 4x－3 ×9 = 29 1541511321213x + x = 4 X－21×=4 xx20 2(x2.6)8 X- X= 6X＋5 =13.4 5X= X÷= 5310261034195282132581161X21162613X÷=12 X= X=× X÷=÷ X-0.25= =30% 4+0.7X=102 X+X=42 X+X=105 34572965144324354525 33363131352133X-X=400 X-0.125X=8 = X+ X=18 X×( + )= x－0.375x= x×+=4× X－X＝12 5 X－2.4×5＝8 768126328784X 33214380.36×5- x = (x- 4.5) = 7 x- 25%x = 10 x- 0.8x = 16+6 20 x– 8.5= 1.5 x- x -4= 21 X＋25%X=90 X－ X= 4532579 2233314355 X－ X= 2X + = 70%X + 20%X = 3.6 X×=20× 25% + 10X = X - 15%X = 68 X＋X＝121 5X－3×＝ 75545458217 31321X X÷2=7 X＋7X=3 4X－6×2=2 12 ÷X=3 3 X = 25 8 X = 1×16 X÷＝12 6X＋5 =13.4 510448347168435729651 1X13626113221362613 X÷ =× x + x = 4 X－21×=4 =30% X÷=÷ x×+=4× x- 25%x = 10 2261033283545254253545 5262613332131313130.36×5- x = (x- 4.5) = 7 X×( + )= X×( + )= X÷ =× x－0.375x= x×4536812681263354525+=4× 1238 本文来源：https://www.wddqw.com/doc/1e95a5aacf22bcd126fff705cc17552707225ef5.html