1.8*4+3*(5x-4)+1.8*4+3*(3x-4)=26.4

问题描述:

1.8*4+3*(5x-4)+1.8*4+3*(3x-4)=26.4

1.8*4+3*(5x-4)+1.8*4+3*(3x-4)=26.4
7.2+15x-12+7.2+9x-12=26.4
24x=26.4+12-14.4
24x=24
x=1