237 - ( 66 + 34 )
= 237 - 66 + 34
= 237 - 100
= 137
237 - (66+x)
thay x=34 va bieu thuc tren , ta co :
237- (66+34)
=237 - 100
= 137
237 - ( 66 + 34 )
= 237 - 66 + 34
= 237 - 100
= 137
thay x=34 vao bieu thuc 237-(66+x) ta duoc :
237-(66+34)=237-100=137
vay bieu thuc co gia tri bang 137 voi x=34
237 - (66-x)
thay x =34 va bieu thuc tren ,ta co:
237 -(66+34)
=237 - 100=137
237-(66+x)
Với x =34 ta có:
237-(36+34)
=237-100
=137
237 - ( 66 - x )
= 237 - 66 + 34
= 237 - 100
= 137