Question

1) 2.3х-1.6х+8.9х 2) -15.16у +3.8у -1.4у​

Answer 1

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