解方程3(4x-1)+5(3x+2)=7(2x-1)+1

问题描述:

解方程3(4x-1)+5(3x+2)=7(2x-1)+1


3(4x-1)+5(3x+2)=7(2x-1)+1
12x-3+15x+10=14x-7+1
27x+7=14x-6
13x=-13
x=-1

(4x-1)+5(3x+2)=7(2x-1)+1
4x-1+15x+10=14x-7+1
5x=-15
x=-3

12X-3+15x+10=14x-7+1
27X+7=14X-6
27X-14X=-6-7
13X=-13
X=-1

x等于负一

3(4x-1)+5(3x+2)=7(2x-1)+1
12x-3+15x+10=14x-7+1
12x+15x+7=14x-6
27x+7=14x-6
27x-14x=-6-7
13x=-13
x=-1

12x-3+15x+10=14x-7+1
x=-1