B 3/7X -0,4 = -17/35 3
d (x:2,2).1/6 = -3/8 . ( 0,5 -1—)
5
f ( 0,12.3/4+1/7).x= ( 0,5 – 3/5 ). 1/2
B 3/7X -0,4 = -17/35 3
d (x:2,2).1/6 = -3/8 . ( 0,5 -1—)
5
f ( 0,12.3/4+1/7).x= ( 0,5 – 3/5 ). 1/2
`b) 3/7x -0,4 = -17/35`
`=> 3/7x – 2/5 = -17/35`
`=> 3/7x = -17/35+2/5=-3/35`
`=> x=-3/35 : 3/7=-1/5`
`d) (x:2,2).1/6 = -3/8 .(0,5 – 1 3/5)`
`=> (x:11/5).1/6=(-3/8) . (1/2- 8/5)`
`=> (x:11/5).1/6=(-3/8).(-11/10)=33/80`
`=> x:11/5=33/80 : 1/6=99/40`
`=> x=99/40 . 11/5=1089/200`
`f) ( 0,12. 3/4+1/7).x= ( 0,5 – 3/5 ). 1/2`
`=> (3/25 . 3/4+1/7).x=(-1/10).1/2`
`=> 163/700. x=-1/20`
`=> x=-1/20 : 163/700=-35/163`