问题
解答题
解方程
3(x-5)=27. |
答案
(1)
x+1.25x=9,3 4
2x=9,
2x÷2=9÷2,
x=4.5;
(2)3(x-5)=27,
3(x-5)÷3=27÷3,
x-5=9,
x-5+5=9+5,
x=14.
解方程
3(x-5)=27. |
(1)
x+1.25x=9,3 4
2x=9,
2x÷2=9÷2,
x=4.5;
(2)3(x-5)=27,
3(x-5)÷3=27÷3,
x-5=9,
x-5+5=9+5,
x=14.