Question

solve each of the following equations by the trial an error method is y+9 = 13​

Answer 1

Y= 13-9
= 4
This is the answer according to simple linear equations.

Answer 2

Answer:

y=1, 1+9=13 but 10 is not equal to 13

y=2, 2+9=13 but 11 is not equal to 13

y=3, 3+9=13 but 12 is not equal to 13

y=4, 4+9=13 we get 13=13

so y=4