4x942+39-85843+37

Answer 1

For this question, you have to use Order of Operations, or PEMDAS.
P = Parenthesis
E = Exponents
M = Multiplication
D = Division
A = Addition
S = Subtraction
This is the order in which you have to solve the question to get the right answers.
(I will solve it in my next response)

Answer 2

Use your calculator.
4*942+39-85843+37 = -81,999.