, 41x36+59x90+41x84+59x30
= 41 x ( 36 + 84) + 59 x ( 90 + 30)
= 41 x 120 + 59 x 120
= 120 x ( 41 + 59 )
= 120 x 100
= 12 000
\(a,41.36+59.90+41.84+59.30\)
\(=41\left(36+84\right)+59\left(90+30\right)\)
\(=41.120+59.120\)
\(=120\left(41+59\right)\)
\(=120.100\)
\(12000\)
a)41.36+59.90+41.84+59.30
=41.(36+84)+59.(90+30)
=41.120+59.120
=120.(41+59)
=120.100
=12000
b)4.51.7+2.86.7+12.2.7
=28.51+14.86+84.2
=28.51+28.43+6.28
=28.(51+43+6)
=28.100
=2800.
=7.
b,4.51.7+2.86.7+12.2.7
=7(4.51+2.86+12.2)
=7\(\left[4.51+2\left(86+12\right)\right]\)
=7(2.2.51+2.100)
=7.2(2.51+100)
=7.2.10200
=14.10200
=142800
