Question

Решите уравнение:
1)9х-26=30-5х
2).0,9х-7.4=-0,4х+4.3

Answer 1

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

Answer 2

9х-26=30-5х
9x-5x=30+26
4x=56
x=56:4
х=14

0,9х-7.4=-0,4х+4.3
0,9х+0,4х=4,3+7,4
1,3х=11,7
х=11,7:1,3
х=9