=56,8.1,42-1,(42:10).(5,68.10) Vì a:10.10=a
=56,8.1,42-0,42.5,68
=56,8.(1,42-0,42)
=56,8.1
=56,8
nhen!
56,8 x 1,42 - 4,2 x 5,68
= 56,8 x 1,42 - ( 4,2 : 10 ) x ( 5,68 x10)
= 56,8 x 1,42 - 0,42 x 56,8
= 56,8 x ( 1,42 - 0,42 )
= 56,8 x 1
= 56,8
\(56,8\)x \(1,42\)\(-4,2\)x \(5,68\)
\(=56,8\)x \(1,42\)\(-0,42\)x \(10\)x\(5,68\)
\(=56,8\)x\(1,42\)\(-0,42\)x \(56,8\)
\(=56,8\)x \(\left(1,42-0,42\right)\)
\(=56,8\)
56,8 x 1,42 - 4,2 x 5,68
=(56,8 : 10) x (1,42 x 10) - 4,2 x 5,68
= 5,68 x 14,2 - 4,2 x 5,68
=5,68 x ( 14,2 - 4,2)
=5,68 x 10
= 56,8
