упростите выражение xy-7x-(x-4xy)

Question

упростите выражение

xy-7x-(x-4xy)

Answer 1

xy-7x-(x-4xy) = xy-7x-x+4xy = 5xy-8x

Answer 2

xy-7x-(x-4xy) = xy-7x-x+4xy=5xy-8x = x(5y-8)