Question

(1) 6(0.5X-4)+2X=7-(三分之一X-1) (2) 25b-(b-5)=29 (3) 7x+2(3x-3)

Answer 1

答案(1)x=3(2)b=12/13 (3)x=9/14 (4)y=-44答案补充(1)3x-24+2x=7-1/3x+1 5x-24=8-1/3x 5x+1/3x =16 16x/3 =16 x=3

(2)25b-b+5=29 24b=24 b=1

(3)7x+6x-6=-x+3 13x-6==-x+3 14x=9 x=9/14

(4)20-y=-1.5y-2 -1.5y+y=22 -0.5y=22 y=-44