Решите уравнение 2/3 +(1/7 + x)=5/6 +1/12
2/3+(1/7+х)=5/6+1/12 2/3+(1/7+х)=10/12+1/12 2/3+(1/7+х)=11/12 1/7+х=11/12-2/3 1/7+х=11/12-8/12 1/7+х=3/12 1/7+х=1/4 х=1/4-1/7 х=7/28-4/28 х=3/28