Respuesta :
Answer:
Step-by-step explanation:
3. X=7
cause you make the front numbers to 1 (2/9+7/9=1),
then you get the result in a second is 5/8 without a calculator.
Answer:
Step-by-step explanation:
3. X=7
cause you make the front numbers to 1 (2/9+7/9=1),
then you get the result in a second is 5/8 without a calculator.