(0.5x+1.5)\0.1-(0.4x-1)\0.5=-4

来源：学生作业学帮网编辑：学帮网时间：2024/07/08 22:21:11

10（0.5x+1.5）-2（0.4x-1）=-4

5x+15-0.8x+2=-4

4.2x=-4-15-2

4.2x=-21

x=-5

(0.5x+1.5)\0.1-(0.4x-1)\0.5=-4
10(0.5x+1.5)-2(0.4x-1)=-4
5x+15-0.8x+2=-4
5x-0.8x=-4-15-2
4.2x=-21
x=-21÷4.2
x=-5