Question

solve the equation 5 a + b = 2 and 6a + 3b = 1 by substitution method​

Answer 1

5a+b=2...(1)

6a+3b=1....(2)

From (1),b=2-5a

Put b in (2)

6a+3(2-5a)=2

6a+6-15a=2

-9a=2-6

-9a=-4

a=4/9

b=2-5(4/9)

b=2-20/9

b=-2/9