Question

solve x-3=7 by trial and error method.​

Answer 1

the number must be greater than 3.

therefore, we start with 4

(4)-3=1≠7

(5)-3=2≠7

(6)-3=3≠7

(7)-3=4≠7

(8)-3=5≠7

(9)-3=6≠7

(10)-3=7. (therefore,x=10)