a -b =24
a ÷b =0.6
可得a =0.6b
带入第一个式子中
0.6b -b =24
b =-60;a =-36
所以a+b =-96
a÷b=60%
a=0.6b
a一b=24
0.6b一b=24
一0.4b=24
b=24÷(一0.4)
b=24x(一I0/4)
b=一60
a=一60X60%
a=一36
a十b=一36十(一60)
=一96
a–b=24
a=0.6b
–0.4b=24
b=–60
a=–36
B:24/(1—60%)=60
A:60*60%=36
A+B=60+36=96
a-b=24 ①
a÷b=60/% ②
由①得a=24+b带入②
(24+b)÷b=0.6
24+b=0.6b
移项,合并同类项:
0.4b=-24
b=-60 那么
a=24+b=24-60=-36
故:a+b=-36-60=-96