99.99 x 0.7 +11.11 x 2.7

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99.99 x 0.7 +11.11 x 2.7
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99.99 x 0.7 +11.11 x 2.7
99.99 x 0.7 +11.11 x 2.7

99.99 x 0.7 +11.11 x 2.7
99.99 x 0.7 +11.11 x 2.7
解,得:
==11.11*9*0.7+11.11*2.7
==11.11*(6.3+2.7)
==11.11*10
==111.1

99.99 x 0.7 +11.11 x 2.7
= 100x 0.7 - 0.7x 0.01 + 11 x 2.7 + 0.11x 2.7
= 70 - 0.007 + 29.7 + 0.297
= 99.99

=99.99 x 0.7 +11.11 x( 9*3)=99.99 x 0.7 +(11.11 x9)*0.3=99.99 x 0.7 +99.99 x 0.3=99.99*(0.7+0.3)=99.99*1=99.99

99.99*0.7+11.11*2.7=9*11.11*0.7+11.11*2+11.11*0.7=11.11*0.7*(9+1)+11.11*2=7.777*10+22.22=77.77+22.22=99.99