Question

solve the equation 3a+b=11,2a-b=4

Answer 1

which method????

there are various methods to solve this question

we can solve by.....

substitution

elimination

cross multiplication

graphical

pls be specific while asking the question ....ok

Answer 2

Hey friends

____________________________

==>> Solution

3a + b = 11 ................(1)

2a - b = 4 ...................(2)


There is same pair and opposite sign

Therefore,

Add equation (1) and (2) we get

3a + b = 11

2a - b = 4
--------------------

5a = 15

a = 15/5

a = 3

$\boxed{a \: = \: 3}$

Put a = 3 in equation (1)

3a + b = 11

3 x 3 + b = 11

9 + b = 11

b = 11 - 9

b = 2

$\boxed{b \: = 2}$

$\huge \blue{Thanks}$