(3+-3÷-7)×7=24(-3-3÷7)×-7=24(-3÷7-3)×-7=24(-3÷-7+3)×7=247×(3+-3÷-7)=247×(-3÷-7+3)=24-7×(-3-3÷7)=24-7×(-3÷7-3)=24
