Question

solve the linear system x+2y=4,3x+y=2 by substitution.if 4x+y=c,ax+by=3 is a system having the same solution set as(I),find a,b,c

Answer 1

hi mate your answer

x+2y=4--------(1)

3x+y=2

y=2-3x------(2)

put y=2-3x in eq (1)

x+2y=4

x+2(2-3x) =4

x+4-6x=4

-5x=4-4

x=0/-5

x=0

put x=o in equation (2)

y=2-3x

y=2-3×0

y=2-0

y=2

the solution of the equation is (0, 2)

hope that it will help you