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Answer:
a) 625 * (-35) + (-625) * 65
- Take 625 as common
- 625 * ( -35 -65 )
- 625 * ( 100)
- = 62500
b ) 7 * ( 50-2 )
- ( 7 * 50) - (7 * 2)
- 350 - 14
- = 336
c ) ( -17) * ( - 29 )
- ( -17 ) * ( -30 + 1 )
- -17 * -30 + ( -17 * 1 )
- + 510 - 17 = 493
d) ( -57 ) * 19 + 57
- ( -57 ) * ( 20-1 )
- -57 * 20 + ( -57 * -1 )
- - 1140 + 57
- = -1083 + 57
- = - 1026
Answered by
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Answer:
625×(-35)+(-625)×65=-21875+(-40625)
=-62500
7×(50-2)=7×48=336
(-17)*(-29)=493
(-57)*(-19)+57=1083+57
=1140
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