Question

x=-2 and y=1 is a solution of linear equation4x+ay=7 then find a value of a

Answer 1

first insert the value of x and y in a given equation

4*(-2)+a(1)=7

-8+a=7

transfer the -8 to RHS its become positive 8

a=7+8

after adding you will get the value of a is 15

a=15

Answer 2

first insert the value of x and y in a given equation

4*(-2)+a(1)=7

-8+a=7

transfer the -8 to RHS its become positive 8

a=7+8

after adding you will get the value of a is 15

a=15