#### Answer

$3$

#### Work Step by Step

Solve using PEMDAS (The priority list for solving expressions: Parentheses, exponents, [multiplication, division], [addition, subtraction]. For the operations in the brackets, solve from left to right)
$\dfrac{5(12-7)-4}{5^2-18} = \dfrac{5\cdot 5-4}{5^2-18} = \dfrac{5\cdot 5-4}{25-18} = \dfrac{25-4}{25-18} = \dfrac{21}{7} = 3$