The value of x for the given expression will be equal to 6.
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.
The given expression will be solved for x as below:-
( 8.4 / x ) = ( 7 / 5 )
Cross multiply the fractions and solve further.
7 × x = 8.4 × 5
7x = 42
Divide 42 by 7 to find the value of x.
x = 6
Therefore, the value of x for the given expression will be equal to 6.
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