Sooos 1144 и 1146 задание

Question

Sooos 1144 и 1146 задание

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Answer 1

#1144
1) 3х=28-х
4х=28
х=7
2) 5х+12=8х+30
-3х=18
х= -6
3) 33+8х= -5х+72
13х=39
х=3
#1146
1) 9(х-1)=х+15
9х-9=х+15
8х=24
х=3
2) (11х+14)-(5х-8)=25
11х+14-5х+8=25
6х=3
х=0.5