1. [-5 + 4 – (-6)] – [7 – 23 + ( -1 )]
2.[-5 + (-7) + 20 ] + x = 7 – (-34) + 19
1. [-5 + 4 – (-6)] – [7 – 23 + ( -1 )] 2.[-5 + (-7) + 20 ] + x = 7 – (-34) + 19
By Samantha
By Samantha
1. [-5 + 4 – (-6)] – [7 – 23 + ( -1 )]
2.[-5 + (-7) + 20 ] + x = 7 – (-34) + 19
1.
[(-5) + 4 – (-6)] – [7 – 23 + ( -1 )]
= 5. – (-17)
= 22
2.
[-5 + (-7) + 20 ] + x = 7 – (-34) + 19
8. + x. = 60
x. = 60-8
x. = 52
Vậy x=52
@ara boss ris
1. [-5 + 4 – (-6)] – [7 – 23 + ( -1 )]=5-(-17)=22
2.[-5 + (-7) + 20 ] + x = 7 – (-34) + 19
8+x=60
x =60-8=52
vậy x=52