1/5 x - 8 = 22
1/5 x = 22 + 8
1/5 x = 30
x = 30 × 5/1
x = 150
1 1/4 x - 1/5 x = 4
( 4 × 1 + 1 )/4 x - 1/5 x = 4
5/4 x - 1/5 x = 4
( 25/20 - 4/20 ) x = 4
21/20 x = 4
21x/20 = 4
21x = 4( 20 )
21x = 80
x = 80/21
x = 3 17/21
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Verified answer
1/5 x - 8 = 22
1/5 x = 22 + 8
1/5 x = 30
x = 30 × 5/1
x = 150
1 1/4 x - 1/5 x = 4
( 4 × 1 + 1 )/4 x - 1/5 x = 4
5/4 x - 1/5 x = 4
( 25/20 - 4/20 ) x = 4
21/20 x = 4
21x/20 = 4
21x = 4( 20 )
21x = 80
x = 80/21
x = 3 17/21