-x + [5y - {x - (5y - 2x)}]

Simplify each of the following: 2x-{5y-(x-2y)} 2x-[3y-{2x-(y-x)}]

Simplify each of the following algebraic expressions by removing grouping symbols. x+[5y-{2x-(3y-5x)}] 2a-[4b-{4a-3(2a-b)}]

If 2x + y = 23 and 4x - y = 19 , then find the values of 5y - 2x and (y)/(x) - 2 .

What are the values of x and y in the system of linear equations 4x + 5y = -3 and 2x - y = 2 ?

{:(2x - 3y = k),(4x + 5y = 3):}

{:("Column" A ,, "Column" B), (225x^(2) - 625 y^(2) = ,, (a) 25(x-2) (x-2)), (x^(2) - x - y - y^(2) = ,, (b) 25(3x- 5y) (3x + 5y)), (x^(2) - x - y^(2) + y = ,, (x + y) (x - y- 1)), (25x^(2) - 100 x + 100 = ,, (d) (x - y) (x + y -1)), (,,(e) (x + y) (x + y - 1)):}

Simplify: (2x + 5y)(3x + 4y) - (7x + 3y)(2x + y)