Question

solve a+b=11, a-b= -3 by addition substraction method

Answer 1

Answer:

hope it helps

Step-by-step explanation:

mark me as brainliest

Answer 2

To find : values of $a$ and $b$

Given equations : $a + b = 11$ and $a - b = -3$

Solution :

• To solve the above equations we add both equations by solving LHS and RHS simultaneously.

               $( a+ b) + ( a - b ) = (11) + ( -3 )$

                    $a + b + a -b = 8$

                                     $2a = 8 \\a = 4$

• Now , substituting the value of $a$ in one of the equations to find the value of $b$ .

           $a + b = 11\\4 + b = 11\\b = 11 - 4\\b = 7$

Hence, on solving we get value of $a = 4$ and $b = 7$.