Question

Find the solution of the equation $x+2=6$ by trial and error method.

• A. 2
• B. 3
• C. 4
• D. 5

Answer 1

The correct option is C 4

Given equation is $x+2=6$.

Substituting value ($x$)	Value of LHS ($x+2$)	Value of RHS (6)	Whether LHS and RHS are equal
1	1+2 = 3	6	No
2	2+2 = 4	6	No
3	3+2 = 5	6	No
4	4+2 = 6	6	Yes

As LHS = RHS for $x$ = 4
Hence $x$ = 4 is the solution of the given equation.