Question

Question : 7

Which of the following equations has x = 2 as a solution?

(a) x + 2 = 5

(b) x - 2 = 0

(c) 2x + 1 = 0

(d) x + 3 = 6

Answer 1

$\begin{array}{ccc}\text{Equation}& \text{Substituting x = 2}& \text{Equation satisfied}\\ \left(a\right)x+2=5& 2+2=4& No\\ \left(b\right)x-2=0& 2-2=0& Yes\\ \left(c\right)2x+1=0& (2\times 2)+1=5& No\\ \left(d\right)x+3=6& (2+3)=5& No\end{array}$

$\therefore$The equation x - 2 = 0 has x = 2 as solution.