Плиз 1489 решите к 18 00 здавать

Question

Плиз 1489 решите к 18 00 здавать

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Answer 1

1,9-x=2.136:7.12
1.9-x=0.3
-x=0.3-1.9
-x=-1.6
x=1.6

0.8+y=8.82:4.2
0.8+y=2.1
y=2.1-0.8
y=1.3

0.2t+1.7t=0.22+0.54
1.9t=0.76
t=0.76:1.9
t=0.4

5.6z-2z-0.7z=7-2.65
2.9z=4.35
z=4.35:2.9
z=1.5