计算下面各题．14+58×4535×14+34×3515×（15+13）710÷13+1213×710

Question

计算下面各题． (1)/(4) +(5)/(8) ×(4)/(5)	(3)/(5) ×(1)/(4) +(3)/(4) ×(3)/(5)
15×（ (1)/(5) +(1)/(3) ）	(7)/(10) ÷13+ (12)/(13) × (7)/(10) ．

Answer 1

(1)/(4) +(5)/(8) ×(4)/(5)
= (1)/(4) +(1)/(2)
= (3)/(4) ；

(3)/(5) × (1)/(4) +(3)/(4) × (3)/(5)
= (3)/(5) ×（ (1)/(4) +(3)/(4) ）
= (3)/(5) × 1
= (3)/(5) ；

15×（ (1)/(5) +(1)/(3) ）
=15× (1)/(5) +15× (1)/(3)
=3+5
=8；

(7)/(10) ÷13+ (12)/(13) × (7)/(10)
= (7)/(10) ×（ (1)/(13) +(12)/(13) ）
= (7)/(10) ×1
= (7)/(10) ．