Question

three times the sum of a number and four gives 93?

Answer 1

3 * (n + 4) = 93

3n + 12 = 93

Subtract 12 to both sides:

3n = 81

Divide 3 to both sides:

n = 27

Answer 2

$3(x+4)=93\\ 3x+12=93\\ 3x=81\\ x=27$