Question

\(\dfrac{\left(-3\right)^x}{81}=-27\)

Answer 1

\(\Leftrightarrow\left(-3\right)^x=\left(-3\right)^3\cdot\left(-3\right)^4=\left(-3\right)^7\)

=>x=7

Answer 2

\(\dfrac{\left(-3\right)^x}{81}=-27\\ =>\left(-3\right)^x=81x\left(-27\right)=-2187\\ < =>\left(-3\right)^x=\left(-3\right)^7< =>x=7\)

Answer 3

\(\dfrac{\left(-3\right)^x}{81}=-27\)

`(-3)^x :81=-27`

`(-3)^x=-27xx81`

`(-3)^x=-2187`

`=>(-3)^x=(-3)^7`

`=>x=7`