1) 27(п-27) = 2727п - 729 = 2727п = 756п = 756/27п = 28
2) (21-z)/21 = 021 - z = 0z = 21
3) 44/(c+44) = 144 = c + 44c = 0
4) 3x + 4x - 2 - 5x = 02x - 2 = 02x = 2x = 1
1) 27(п-27) = 27
27п - 729 = 27
27п = 756
п = 756/27
п = 28
2) (21-z)/21 = 0
21 - z = 0
z = 21
3) 44/(c+44) = 1
44 = c + 44
c = 0
4) 3x + 4x - 2 - 5x = 0
2x - 2 = 0
2x = 2
x = 1