The amazing numbers

                                                         

  
PROBLEM:

Maria started selling apples yesterday, the first person how buy maria´s apples was the boss of a supermarket because he need more apples, maria starts having 20 apples, the supermarket boss buy the middle of the apples, then her friend david come and buy four apples, finaly she buys seven apples for selling today.  how many apples have maria now?

二十 ÷ (八 -  六) - 四 + 七

二十 ÷ 二 - 四 + 七

十 - 四 + 七

六 + 七

十三  

=

20 ÷ (8 - 6) - 4 + 7

20 ÷ 2 - 4 + 7

10 - 4 + 7

6 + 7

13

EQUATION:

九十九 - 九十 + 十 + 一 X 二

九 + 十 + 一 X 二

十九+ 一 X 二

二十 X 二

四十

=

99 - 90 + 10 + 1 X 2

9 + 10 +1 X 2

19 + 1 X 2

20 X 2

40

GREATER OR SMALLER THAN:

二十 > 八

=

20 > 8