Question

3.x-7=(-21)

Answer 1

⇔3x=-14

⇔x=-14/3

Answer 2

\(3x-7=-21\\ 3x=-14\\ x=-\dfrac{14}{3}\)

Answer 3

\(3x-7=-21\\ \Rightarrow3x=7-21\\ \Rightarrow3x=-14\\ \Rightarrow x=-\dfrac{14}{3}\)

Answer 4

3.x=-14

x=-14/3

Answer 5

\(3.x-7=(-21)\)

\(3x = -21 +7\)

\(3x = -14\)

\(x = -14 : 3\)

\(x = \dfrac{-14}{3}\)