Answer:
12 = -15
Step-by-step explanation:
Remember PEMDAS
Parenthesis
Exponents
Multiplication and Division (Left to Right)
Addition and Subtraction (Left to right)
4+ [8 = (8 - 7) + 6 - 12] - 10
4+ [8 = (8 - 7) + 6 - 12] - 10
4+ [8 = 1 + 6 - 12] - 10
4+ [8 = 1 + 6 - 12] - 10
4+ [8 = -5] - 10
4 + 8 = -5 - 10
4 + 8 = -15
12 = -15
Hope this helped!