Question

数学综合题~

a,b两数的差及商都等于1.4,那么a,b两数各是多少? 我需要详细计算过程,谢谢!

Answer 1

a - b = 1.4 (1)
a ÷b = 1.4 (2)
由(2)式得:
a = 1.4b (3)
把(3)代入(1) 得:
1.4b - b = 1.4
0.4b = 1.4
b = 3.5
把 b = 3.5 代入 (1)得:
a = b + 1.4 = 4.9

综上: a = 4.9 , b = 3.5