x + 1/4 x = 10 4/4 x + 1/4 x = 10 5/4 x = 10 x = 10 × 4/5 x = 8 x - 1/5 x = 24 5/5 x - 1/5 x = 24 4/5 x = 24 x = 24× 5/4 x = 30
