(5х + 7)/5 - (6х - 2)/2 = (4х - 12)/10
10•(5х + 7)/5 - 10•(6х - 2)/2 = 10•(4х - 12)/10
2•(5х + 7) - 5•(6х - 2)/ = (4х - 12)
10х + 14 - 30х + 10= 4х - 12
10х - 30х - 4х = -12 - 14 - 10
-24х = -36
х = -36 : (-24)
х = 1 1/2 или 1,5
(5/6) • (1/3 • х - 1/5) = 7х - 4(х - 5/6)
5х/18 - 5/30 = 7х - 4х + 20/6
5х/18 - 5/30 = 3х + 20/6
10•5х/(10•18) - 6•5/(6•30) = 180•3х/180 +
+ 30•20/(30•6)
50х/180 - 30/180 = 540х/180 + 600/180
50х - 30 = 540х + 600
540х - 50х = -30 - 600
490х = - 630
х = -630 : 490
х = - 9/7 = - 1 2/7
(5х + 7)/5 - (6х - 2)/2 = (4х - 12)/10
10•(5х + 7)/5 - 10•(6х - 2)/2 = 10•(4х - 12)/10
2•(5х + 7) - 5•(6х - 2)/ = (4х - 12)
10х + 14 - 30х + 10= 4х - 12
10х - 30х - 4х = -12 - 14 - 10
-24х = -36
х = -36 : (-24)
х = 1 1/2 или 1,5
(5/6) • (1/3 • х - 1/5) = 7х - 4(х - 5/6)
5х/18 - 5/30 = 7х - 4х + 20/6
5х/18 - 5/30 = 3х + 20/6
10•5х/(10•18) - 6•5/(6•30) = 180•3х/180 +
+ 30•20/(30•6)
50х/180 - 30/180 = 540х/180 + 600/180
50х - 30 = 540х + 600
540х - 50х = -30 - 600
490х = - 630
х = -630 : 490
х = - 9/7 = - 1 2/7