7(9x-7)+3(9x+30)=6x-11
63x – 49 + 27x + 90 = 6x – 11
63x + 27x – 6x = – 11 – 90 + 49
84x = -52
21x = -13
x = -13/21
х=-0,61904761904
7(9x-7)+3(9x+30)=6x-11
63x – 49 + 27x + 90 = 6x – 11
63x + 27x – 6x = – 11 – 90 + 49
84x = -52
21x = -13
x = -13/21
х=-0,61904761904