2.5x-x = 0.25 Such as the title

2.5x-x = 0.25 Such as the title

2.5x-x = 0.25
1.5X=0.25
X=1/6

What is the value of subtracting 5x plus 6 from the square of X by 1 and then dividing by x minus the square of x plus x (simplified evaluation)

The narration is so confusing that I can't understand it. Please write it down
{[(a+b)/(c-d)]/(e+f)}+[(g-h)/i]
And so on

What is the quotient of 21.5 minus three 1 / 2 differences divided by 3 / 5?

The quotient is: (21.5-3 × 1 / 2) △ 3 / 5
=（21.5-1.5）×5/3
=20×5/3
=100/3
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Solve the equation 0.5x + 20.03 − x = 0.3 (0.5x + 2) 0.2 − 101112

The original equation can be reduced to 50x + 2003-x = 3 (x + 4) 4-13112, remove denominator, get 4 (50x + 200) - 12x = 9 (x + 4) - 131, remove bracket, get 200X + 800-12x = 9x + 36-131, transfer term, get 200x-12x-9x = 36-131-800, merge similar term, get 179x = - 895, coefficient is 1, get x = - 5