Sagot :
Answer:
[tex]a. \: \: ( - 6) + 3 = - 3 \\ - 3 = 9 \: \: false[/tex]
[tex]c. \: \: ( -4 ) + 4 = 0 \\ 0 = 8 \: \: false[/tex]
[tex]b. \: \: (4) + 2 = 6 \\ 6 = 6 \: \: true[/tex]
[tex]d. \: \: ( - 5) - 10 = - 15 \\ - 15 = - 5 \: \: false[/tex]
therefore the correct answer is option b.
note: be carefull of options b and c.
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