Question

-2(x-1)-4(x-2)=1 12-(9-m)=5(m-4)-7(7-m) 3分之（1-y）-y=3-4分之（y+2

Answer 1

-2(x-1)-4(x-2)=1

-2x+2-4x+8=1

10-6x=1

6x=9

x=3/2

12-(9-m)=5(m-4)-7(7-m)

12-9+m=5m-20-49+7m

3+m=12m-69

11m=72

m=72/11

3分之（1-y）-y=3-4分之（y+2)

4(1-y)-12y=36-3(y+2)

4-4y-12y=36-3y-6

4-16y=30-3y

13y=-26

y=-2

x-12分之(2x+1)=1-4分之(3x-2)

12x-(2x+1)=12-3(3x-2)

12x-2x-1=12-9x+6

10x-1=18-9x

19x=19

x=1