x - \(\text{​​}\text{​​}\left(\dfrac{50x}{100}+\dfrac{25x}{200}\right)\)= \(11\dfrac{1}{4}\)

42 . 47 + 43 . 42 - 600

= 42 . (47 + 43) - 600

= 42 . 90 - 600

= 3780 - 600

= 3180

A=\(\dfrac{3^{10}.11+3^{10}.5}{3^9.2^4}\)

1) Students (not go) ................to school on saturdays and sunday.

2)  I promise I (not be) .............. late any more .

3)  Look ! The woman who (stand) ............... next to the door  is out new teacher .

4) We (meet) ............each other for a long time .