Toán Lớp 6: 1.-37+26+14+37
2. -37 – 14 – 26+37
3. -21+(-93)+121+(-7)
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Toán Lớp 6: 1.-37+26+14+37
2. -37 – 14 – 26+37
3. -21+(-93)+121+(-7)
Comments ( 2 )
-37 + 26 + 14 + 37
= ( -37 + 37 ) + ( 26 + 14 )
= 0 + 40
= 40
________________________
= ( -37 + 37 ) – ( 14 + 26 )
= 0 – 40
= -40
______________________
-21 + ( -93 ) + 121 + ( – 7 )
= -21 – 93 + 121 – 7
= ( -21 + 121 ) + ( -93 – 7 )
= 100 + ( -100 )
= 100 – 100
= 0