Answer
C
Work Step by Step
Before finding the solution to all 4 equations, look at the equations to see if any appear to be unreasonable and determine whether that equation is false.
Choice C seems to be unreasonable because you are adding two numbers that are greater than 50, but the given result is negative. Simplify the expression to determine whether C is true or false.
51−(−57)=?−6⟶ change subtraction to addition and reverse the sign
51+57=?−6⟶ add
108≠−6 X
