Question

(7х+16)/11+8/12=19991/19991

Answer 1

7/11x+16/11+2/3=1
7/11x=1-70/33
7/11x=-37/33
x=-37:21
x=-1 16/21

Answer 2

7/11x+16/11+2/3=1
7/11x=1-70/33
7/11x=-37/33
x=-37:21
x=-1 16/21

Answer 3

у мн не правильно