Решите уравнение: 1)9х-26=30-5х 2).0,9х-7.4=-0,4х+4.3
9х-26=30-5х 9х+5х=26+30 14х=56 х=56:14 х=4 --------------------------------- 0.9х-7.4=-0.4х+4.3 0.9х+0.4х=7.4+4.3 1.3х=11.7 х=11.7 :1.3 х=9