\(17.85+15.17-120\)
\(=17.\left(15+85\right)\)\(-120\)
\(=17.100-120\)
\(=1700-120\)
\(=1580\)
17.85+15.17-120
=17.(15+85)-120
=17.100-120
=1700-120
=1580
K cho mk nha
17 . 85 + 15 . 17 - 120
= 17 . ( 85 + 15 ) - 120
= 17 . 100 - 120
= 1700 - 120
= 1680
17.85+15.17-120
=17. (15+85) - 120
=17.100 -120
=1700 - 120
=1580
17.85
+
15.17
−
120
17.85+15.17−120
=
17.
(
15
+
85
)
=17.(15+85)
−
120
−120
=
17.100
−
120
=17.100−120
=
1700
−
120
=1700−120
=
1580
=1580
