Question

34-1 14(16x+1)-14(8x+2)=1,2

Answer 1

34-1 14(16x+1)-14(8x+2)=1,2

3/4-1 1/4×16x-1 1/4 -1/4×8x-1/4×2=1,2

1) - 1 1/4×16x
- 1 1/4=-(1+1×4)/4= - 5/4
-5/4×16x=-5×4x= - 20x

2)3/4-5/4=-2/4= - 1/2

3) -1/4×8x= - 2x
4) - 1/4×2= -1/2

-1/2-20x-2x-1/2=1,2
-22x=1,2+1
22x=2,2
x=48,4