-6/7х= -9 -8*2/3+4х=6
1) -6/7х= -9 х= -9: (-6/7) х= 9 * 7/6 х= 21/2 х= 10 1/2 х= 10,5 2)- 8 * 2/3 +4х= 6 - 16/3+4х=6 4х=6+16/3 4х= 6/1+16/3 4х= 18/3+18/3 4х= 34/3 х= 34/3 : 4 х= 34/3 * 1/4 х= 34/12 х= 17/6 х= 2 5/6