Question

一道特特特简单的数学题a+b+c+d+e+f+g=25e+c=2c+2gf=b+a+d+1f=e+g求e的值

Answer 1

a+b+c+d+e+f+g=25 (1)

e+c=2c+2g (2)

f=b+a+d+1 (3)

f=e+g (4)

(2)

e=c+2g (5)

(3)(4)

e=f-g=b+a+d+1-g (6)

(5)+(6)

2e=a+b+c+d+g+1

2e-1=a+b+c+d+g (7)

(7) (1)

2e-1+e+f=25

3e+f=26 (8)

再往下就不会了