evaluate 50 - 3 * (-7)
To evaluate the expression 50 - 3 * (-7), we need to follow the order of operations, which states that we should perform multiplications and divisions before additions and subtractions.
First, we solve the multiplication: 3 * (-7) = -21.
Now, we can substitute the result back into the expression: 50 - (-21).
The subtraction of a negative number is equivalent to addition, so we simplify it to: 50 + 21.
Finally, we perform the addition: 50 + 21 = 71.
Therefore, 50 - 3 * (-7) = 71.