Question

12分之5x-4分之x等于3分之1 2分之3减8x等于3减2分之1x 0.5x-0.7x=6.5-1.3x

Answer 1

(1)(5x)/12-x/4=1/3 5x-3x=4 2x=4 x=2

(2)3/2-8x=3-1/2x 3-16x=6-x -16x+x=6-3 -15x=3 x=-1/5

(3)0.5x-0.7x=6.5-1.3x 0.5x-0.7x+1.3x=6.5 1.1x=6.5 x=65/11

(4)1/6(3x-6)=1/5(2x-3) 5(3x-6)=6(2x-3) 15x-30=12x-18 15x-12x=-18+30 3x=12 x=4

(5)??在哪里？