1)8х+52х+128=308
60х=180
Х=3
2)55х-155-9х=121
46х=276
Х=6
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1)8х+52х+128=308
60х=180
Х=3
2)55х-155-9х=121
46х=276
Х=6
8*х+52х+128=308
60х=308-128
60х=180
х=180:60
х=3
5*(11*х-31)-9*х=121
55х-155-9х=121
46х=121+155
46х=276
х=276:46
х=6