Question

From the sum of \[33\] and \[ - 47,\] subtract \[ - 84.\]

Answer 1

Hint: In this question, students should notice the signs along with numbers. Now to solve the question we will start with taking sum of \[33\] and \[ - 47,\]so we will get the answer $ - 14$, then we will subtract \[ - 84\] from \[ - 14,\] and the we will get our required answer.

Complete step-by-step answer:
We have been given two numbers \[33\] and \[ - 47,\] we need to get the sum of these numbers and then subtract \[ - 84\] from it.
On adding \[33\] and \[ - 47,\] we get
$33 + ( - 47) = 33 - 47 = - 14$
Now we are asked to subtract \[ - 84\] from the sum of \[33\] and \[ - 47.\]
So, on subtracting \[ - 84\] from $ - 14$, we get
$ - 14 - ( - 84) = - 14 + 84 = 70$
Thus, we get \[70,\] on subtracting \[ - 84\] from the sum of \[33\] and \[ - 47.\]

Note: Students should read the question carefully, as this question is a little tricky, as it is not directly written that adds these and subtract these. But it is written that first add two numbers and subtract another number from it. There are chances of mistakes of positive sign and negative sign.
Few sign formulas are mentioned below, students should learn it by heart, and can apply in questions like these.
\[\begin{array}{*{20}{l}}
  {1. + {\text{ }} \times {\text{ }} - {\text{ }} = {\text{ }} - } \\
  {2.{\text{ }} + {\text{ }} \times {\text{ }} + {\text{ }} = {\text{ }} + } \\
  {3.{\text{ }} - {\text{ }} \times {\text{ }} - {\text{ }} = {\text{ }} + } \\
  {4.{\text{ }} - {\text{ }} \times {\text{ }} + {\text{ }} = {\text{ }} - }
\end{array}\]