Respuesta :

Answer:

[tex]-5[/tex]

Step-by-step explanation:

**Follow PEMDAS order of operations**:

  • Parentheses
  • Exponents
  • Multiplication
  • Division
  • Addition
  • Subtraction

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[tex]-8-10\times \left(-1\right)+7\times \left(-1\right)[/tex]

1) Multiplication/Division:

[tex]10\times \left(-1\right)[/tex]

[tex]-10[/tex]

[tex]-8-\left(-10\right)+7\times \left(-1\right)[/tex]

[tex]7\times \left(-1\right)[/tex]

[tex]-7[/tex]

2)  Addition/ Subtraction:

[tex]-8-\left(-10\right)-7[/tex]

[tex]-\left(-10\right)=+10[/tex]

[tex]-8+10-7[/tex]

[tex]-8+10=2[/tex]

[tex]2-7[/tex]

[tex]=-5[/tex]

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