The unknown number will be equal to 3.57.
What is an expression?
Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given that five less than seven times a number is the same as thirty. Let the number be x. The number will be calculated as below:-
7x-5=30
Take constant to the same side of the equation and solve for the valuer of x.
30-5=25
7x=25
Divide the number 25 by 7 to get x.
7x=25
x=3.57
Therefore, the unknown number will be equal to 3.57.
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