Question

7×х-18=3
У: ( 48 - 39) =36:6

Answer 1

$7x - 18 = 3 \\ 7x = 3 + 18 \\ 7x = 21 \\ x = 3$

$y \div (48 - 39) = 36 \div 6 \\ y \div 9 = 6 \\ y = 6 \times 9 \\ y = 54$