(0.5x+1.5)\0.1-(0.4x-1)\0.5=-4
问题描述:
(0.5x+1.5)\0.1-(0.4x-1)\0.5=-4
答
(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
答
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