34.(15-10)-15.(34-10)
=34.15-34.10-15.34-15.10
=(34.15-15.34)-34.10-15.10
=0-340-150
=0-(340+150)
=0-490
=-490
Tick nhé
34.(15 - 10) - 15.( 34 - 10)
= 34 . 15 - 34 . 10 - 15 . 34 - 15 . 10
= (34 .15 - 34 . 15) - 34 . 10 - 15 . 10
= 0 - 10.( 34 - 15)
= 0 - 10 . 19
= -190
34.(15-10)-15(34-10)
=34.15-34.10-15.34+15.10
=(34.15-15.34)+(15.10-34.10)
=0+10.(15-34)
=10.(-19)=-190
\(34.(15-10)-15.(34-10)\)
= \(34.5-15.24\)
\(=170 - 360 = -190\)
35.(15-10)-15(34-10)
=35.15-35.10-15.34-15.10
=15.(35-34)-10(35-15)
=15.1-10.20
=15-200
=-185
\(\text{34.(15-10)-15.(34-10)}\)
\(=\left(34.15-34.10\right)-\left(15.34-15.10\right)\)
\(=\left(34.15-15.34\right)-34.10-15.10\)
\(=0-10.\left(34-15\right)\)
\(=0-10.19\)
\(=0-190\)
\(=-190\)
34.(15—10)—15.(34—10)
= 34.15—34.10—15.34+15.10
= 34.(15—10—15)+15.10
= 34.(—10)+15.10
= (—34).10+15.10
= [(—34)+15].10
= (—19).10 = —190
