Help me solve this math problem？?

West High Schools population is 250 students fewer than twice the population of East High School. The two schools have a total of 2858 students. How many students attend East High School?

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w = 2e - 250

w + e = 2858

substitute

(2e - 250) + e = 2858

3e -250 = 2858

3e = 2858 + 250 = 2850 + 250 + 8 = 3108

3e = 3108; e = 3108/3 = 1036

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substituting into w + e = 2858, we have

w + 1036 = 2858

w = 2858 - 1036; w = 1822

Let the West high school be 2x - 250 and the East be x

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2x + x - 250 = 2858

Add the like terms:

3x - 250 = 2858

Add 250 to both sides:

3x = 3108

Divide both sides by 3:

X = 1036

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East high school is x, therefore it has 1036 students