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Question
Pick out the solution from the values given in the bracket next to each equation. Show that the other values do not satisfy the equation.
x + 4 = 2 (− 2, 0, 2, 4)
Solution
x + 4 = 2
x = −2 is a solution to the given equation because for x = −2,
x + 4 = −2 + 4 = 2 and hence, the equation is satisfied.
x = 0 is not a solution to the given equation because for x = 0,
x + 4 = 0 + 4 = 4 and not 2
x = 2 is not a solution to the given equation because for x = 2,
x + 4 = 2 + 4 = 6 and not 2
x = 4 is not a solution to the given equation because for x = 4,
x + 4 = 4 + 4 = 8 and not 2
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