Question

18×[9+(-7)]=18×9+18×(-7)​

Answer 1

$LHS = 18{9 + ( - 7)} \\ = > 18{9 - 7} \\ = > 18 \times 2 \\ = > 36 \\ \\ RHS = 18 \times 9 + 18 \times ( - 7) \\ = > 162 + ( - 126) \\ = > 162 - 126 \\ = > 36 \\ \\ LHS = RHS$

Answer 2

18×[9-7]=18×9+18×(-7)

18×2=162+(-126)

36=162-126

36=36