Respuesta :

7 - (-19) - 18 + (-19) + 18

= 26 - 18 + (-19) + 18

= 8 + (-19) + 18

= - 11 + 18

= 7

Remember:

• follow BEDMAS or PEDMAS
• always go from left to right
• 2 negatives = positive
• 2 positives = negative
• negative and a positive = negative (and vice versa)