-21(2x - 21) + 24(24 - 3х) - 29 = 30(г + 30) - 22(-3х - 22)

-21(2x - 21) + 24(24 - 3x) - 29 = 30(y + 30) - 22(-3x - 22)

Expand both sides:

-42x + 441 + 576 - 72x - 29 = 30y + 900 + 6x + 66

Combine like terms:

-114x + 988 = 30y + 966 + 6x

Rearrange the terms:

-114x - 6x - 30y = 966 - 988

Combine like terms again:

-120x - 30y = -22

Divide by -30:

4x + y = 22

Final answer: 4x + y = 22