2.3х+1.6х+8.9х=
1) 2.3х+1.6х=3.9х
2)3.9х+8.9х=12.8х.
Ответ: 12.8х
-15.16у+3.8у -1.4у
1) -15.16у+3.8у=-11,36у.
2)-11,36-1.4у=-12,76у.
Ответ: -12,76у
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2.3х+1.6х+8.9х=
1) 2.3х+1.6х=3.9х
2)3.9х+8.9х=12.8х.
Ответ: 12.8х
-15.16у+3.8у -1.4у
1) -15.16у+3.8у=-11,36у.
2)-11,36-1.4у=-12,76у.
Ответ: -12,76у