Question

13. Solve the following.
a) (–6) – 9 – (–32)
b) (–4) +( –5) +( –71)

Answer 1

Answer:

Step-by-step explanation:

a) (-6)-9-(-32)

= -6 -9 + 32 (∵ - × - = + )

= - 15 + 32 (∵adding : -6 -9 = - 15 )

= 17 is the answer

b) (-4) + (-5) +(-71)

= -4 -5 -71 (∵ + × - = - )

= - 80 ( ∵ adding : -4 -5 -71 = - 80 ) is the answer

Answer 2

• As per the data given in the question, we have to find the value of the expression.

             Given data:-

              $\text { a) }(-6)-9-(-32)\\\text { b) }(-4)+(-5)+(-71)$

              To find:- Value of given expression.

              Solution:-

• To solve the above equation we will follow the BODMAS rule.

• It is the rule used to remember the order of operations to be followed while solving expressions in mathematics.

               where,

            $\begin{array}{l}\mathrm{B}=\text{brackets}\\\mathrm{O}=\text { order of powers or rules } \\\mathrm{D}=\text { division } \\\mathrm{M}=\text { multiplication } \\\mathrm{A}=\text { addition } \\\mathrm{S}=\text { subtraction }\end{array}$

               Therefore,

            $a) \ (-6)-9-(-32)\\=(-6)-9-(-32)\\=-15-(-32)\\=17.$

           ${ b) }(-4)+(-5)+(-71)\\=(-4)+(-5)+(-71)\\=-9+(-71)\\=-80.$

Hence we will get the value a) is  $17$ and b) is $-80.$