Answer:
Step-by-step explanation:
[tex]( - 2) + ( 3 - 7)[/tex]
[tex] - 2 + (3 - 7)[/tex]
[tex] - 2 + - 4[/tex]
[tex] - 2 - 4[/tex]
[tex]\boxed{\green{ = - 6}}[/tex]
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[tex]( - 1) \times ( - 2)[/tex]
[tex]1 \times 2[/tex]
[tex] \boxed{\green{= 2}}[/tex]