упростите выражения 2x - 3 - (5x - 4) 3х - 5 - (7х - 3) 5х - 6 - (8х-7) 4х - 7 - (6х - 8)

Question

упростите выражения 2x - 3 - (5x - 4)
3х - 5 - (7х - 3)
5х - 6 - (8х-7)
4х - 7 - (6х - 8)

Answer 1

2x - 3 - (5x - 4) = 2x - 3 - 5x + 4 = 1 - 3x
3х - 5 - (7х - 3) = 3x - 5 - 7x + 3 = -4x -2
5х - 6 - (8х-7) = 5x - 6 - 8x + 7 = -3x +1
4х - 7 - (6х - 8) = 4x - 7 - 6x + 8 = 1 - 2x