\(1+\left(-3\right)+5+\left(-7\right)+9+\left(-11\right)\)
\(=\left(1-11\right)+\left(-3-7\right)+\left(5+9\right)\)
\(=-10-10+14\)
\(=-6\)
1 + ( - 3 ) + 5 + ( -7 ) + 9 + ( - 11 )
= (1+5+9)+[-3+(-7)+(-11)]
= 15+(-21)
= (-6)
Ta có : 1 + ( - 3 ) + 5 + ( -7 ) + 9 + ( - 11 )
= [1 + ( - 3 )] + [5 + ( -7 )] + [9 + ( - 11 )]
= -2 + (-2) + (-2)
= -2.3
= -6
1 + ( - 3 ) + 5 + ( -7 ) + 9 + ( - 11 )
= ( 1 + 5 + 9 ) - ( 3 + 7 + 11 )
= 10 - 21
= -11
Ta có : ( 1 + 9 ) + [(-3) + (-7)] + 5 + (-11)
= [10 + (-10)] + 5 + (-11)
= 0 + 5 + (-11)
= 5 + (-11)
= -6
Đúng kh bạn ?
[ 1+9] + [ (-3) + (-7 )] +5 + (-11)
= 10 + -10 + 5 + (-11)
= 0 + (-6)
= (-6)
