Respuesta :

Porshia
Substitute in the -3
7-2(-3)
According to PEMDAS (parentheses, exponents, multiply, divide, add, subtract ) you must multiply, and then subtract.
7- (-6)
7 + 6= 13
Answer is 13
Serena88
This is the answer: 7-2x when X=3 is 13.