5X(x-6.5)=1.

5X(x-6.5)=1.


1.等式兩邊同時除以5,
5×(x—6.5)÷5=1.7÷5
x-6.5=0.34
2.等式兩邊同時加6.5
x-6.5+6.5=0.34+6.5
x=6.85



1/2{1/3[1/4(1/5x-1)-6+3}=1解方程


1/2{1/3[1/4(1/5x-1)-6]+3}=1
1/3[1/4(1/5x-1)-6]+3=2
1/3[1/4(1/5x-1)-6]=-1
1/4(1/5x-1)-6=-3
1/4(1/5x-1)=3
1/5x-1=12
1/5x=13
x=65