Ответ:Решение:\( x + 10 = 26 \)\( x = 26 - 10 \)\( x = 16 \)\( x - 18 = 30 \)\( x = 30 + 18 \)\( x = 48 \)\( 48 - y = 20 \)\( y = 48 - 20 \)\( y = 28 \)Ответ: x = 16; x = 48; y = 28.