Question

eliminate b from a+3b=-1 and a+b=3 then new relation will be?​

Answer 1

Answer: a = 5

Step-by-step explanation:

From eq (i)

a + 3b = -1

=> 3b = -a -1

-> b = (-a -1)/3

Substituting in eq (ii)

a + b = 3

=> a + (-a -1)/3 = 3

=> 3a - a - 1 = 3x3

=> 2a = 9 + 1

=> a = 10/2 = 5

=> a = 5

Therefore b = 3 - a = 3 - 5 = -2

b = -2