Question

The solution of the equation 3x -7 = 20 is ------------.​

Answer 1

Answer:

$3x - 7 = 20 \\ 3x = 20 + 7 \\ 3x = 27 \\ x = \frac{27}{3} \\ x = 9$

Answer 2

Answer:

$\implies3x - 7 = 20 \\ \implies \: 3x = 20 + 7 = 27 \\ \implies \: x = 27 \div 3 = 9 \\ \implies \: x = 9$