Word problem requires the use of mathematical expression to interpret a given statement to determine the unknown. Therefore, the value of the unknown number is -6.
A question on word problem requires converting it to a mathematical expression so as to determine the value of the unknown. Let the unknown number be represented by t. So that the given statement can be expressed as:
([tex]\frac{1}{3}[/tex] of t) + 7 = 5
[tex]\frac{t}{3}[/tex] + 7 = 5
find the lowest common multiple pf the left hand side,
[tex]\frac{t + 21}{3}[/tex] = 5
cross multiply to have;
3 x 5 = t + 21
15 = t + 21
15 - 21 = t
t = -6
Thus, the value of the number required is -6.
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