Question

4*(2-3x)+7*(6x+1)-9*(9x+4)=30

Answer 1

8 - 12x + 42x + 7 - 81x -36 = 30

8 + 7 - 30 - 36 = 81x + 12x -42x

51x = 51

x = 51/51

x = 1

Answer 2

ой х= -1

Answer 3

-51x = 51; x = 51/-51; x = - 1