Respuesta:
[tex]\boxed{\left(-5\right)\cdot \left(-6\right)\left[\left(-8\right)-\frac{\left(-21\right)}{+7}\right]}[/tex]
[tex]\mathrm{Eliminamos \ parentesis:}[/tex]
[tex]5\cdot \:6\left(-8-\frac{-21}{7}\right)[/tex]
[tex]\frac{-21}{7}=-3[/tex]
[tex]5\cdot \:6\left[-8-\left(-3\right)\right][/tex]
[tex]5\cdot \:6\left(-8+3\right)[/tex]
[tex]\mathrm{Sumamos:}[/tex]
[tex]-8+3=-5[/tex]
[tex]5\cdot \:6\left(-5\right)=-5\cdot \:6\cdot \:5[/tex]
Solución
5 · 6 · 5 = 150
[tex]\boxed{-150}[/tex]
Saludos...
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Verified answer
Respuesta:
[tex]\boxed{\left(-5\right)\cdot \left(-6\right)\left[\left(-8\right)-\frac{\left(-21\right)}{+7}\right]}[/tex]
[tex]\mathrm{Eliminamos \ parentesis:}[/tex]
[tex]5\cdot \:6\left(-8-\frac{-21}{7}\right)[/tex]
[tex]\frac{-21}{7}=-3[/tex]
[tex]5\cdot \:6\left[-8-\left(-3\right)\right][/tex]
[tex]5\cdot \:6\left(-8+3\right)[/tex]
[tex]\mathrm{Sumamos:}[/tex]
[tex]-8+3=-5[/tex]
[tex]5\cdot \:6\left(-5\right)=-5\cdot \:6\cdot \:5[/tex]
Solución
5 · 6 · 5 = 150
[tex]\boxed{-150}[/tex]
Saludos...