方程5x-2(x-1)=17的解——?

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/30 06:34:53

方程5x-2(x-1)=17的解——?

5x - 2(x - 1) = 17
5x - 2x + 2 = 17
5x - 2x = 17 - 2
3x = 15
x = 5

5

5x-2(x-1)=17
5x-2x+2=17
5x-2x=17-2
3x=15
x=15/3
x=5

5x-2(x-1)=17
5x-(2x-2)=17
5x-2x+2=17
5x-2x=17-2
(5-2)x=15
3x=15
x=15÷3
x=5

=5