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
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